Fix a few whitespaces in the code

Issues with the style of the code spotted while applying automatically
some checks onto it.  This change has no consequence for the code.

make_join_rel.c

@@ -196,10 +196,10 @@ make_join_rel(PlannerInfo *root, RelOptInfo *rel1, RelOptInfo *rel2)
 				 */
 				set_joinrel_size_estimates(root, joinrel, rel1, rel2, sjinfo,
 										   restrictlist);
-				
+
 				joinrel->rows = adjust_rows(joinrel->rows, domultiply);
 			}
-			
+
 		}
 	}
 	/* !!! END: HERE IS THE PART WHICH IS ADDED FOR PG_HINT_PLAN !!! */

pg_hint_plan.c

@@ -1803,7 +1803,7 @@ parse_hints(HintState *hstate, Query *parse, const char *str)
 }
 
 
-/* 
+/*
  * Get hints from table by client-supplied query string and application name.
  */
 static const char *
@@ -1835,28 +1835,28 @@ get_hints_from_table(const char *client_query, const char *client_application)
 			PushActiveSnapshot(GetTransactionSnapshot());
 			snapshot_set = true;
 		}
-	
+
 		SPI_connect();
-	
+
 		if (plan == NULL)
 		{
 			SPIPlanPtr	p;
 			p = SPI_prepare(search_query, 2, argtypes);
 			plan = SPI_saveplan(p);
 			SPI_freeplan(p);
 		}
-	
+
 		qry = cstring_to_text(client_query);
 		app = cstring_to_text(client_application);
 		values[0] = PointerGetDatum(qry);
 		values[1] = PointerGetDatum(app);
-	
+
 		SPI_execute_plan(plan, values, nulls, true, 1);
-	
+
 		if (SPI_processed > 0)
 		{
 			char	*buf;
-	
+
 			hints = SPI_getvalue(SPI_tuptable->vals[0],
 								 SPI_tuptable->tupdesc, 1);
 			/*
@@ -1869,7 +1869,7 @@ get_hints_from_table(const char *client_query, const char *client_application)
 			strcpy(buf, hints);
 			hints = buf;
 		}
-	
+
 		SPI_finish();
 
 		if (snapshot_set)
@@ -2361,7 +2361,7 @@ RowsHintParse(RowsHint *hint, HintState *hstate, Query *parse,
 
 		return str;
 	}
-	
+
 
 	/*
 	 * Transform relation names from list to array to sort them with qsort
@@ -2460,7 +2460,7 @@ ParallelHintParse(ParallelHint *hint, HintState *hstate, Query *parse,
 	}
 
 	hint->relname = linitial(name_list);
-		
+
 	/* The second parameter is number of workers */
 	hint->nworkers_str = list_nth(name_list, 1);
 	nworkers = strtod(hint->nworkers_str, &end_ptr);
@@ -2930,7 +2930,7 @@ get_current_hint_string(Query *query, const char *query_str,
 								normalized_query),
 						 errhidestmt(msgqno != qno),
 						 errhidecontext(msgqno != qno)));
-			
+
 			msgqno = qno;
 		}
 
@@ -3003,7 +3003,7 @@ pg_hint_plan_planner(Query *parse, const char *query_string, int cursorOptions,
 	const char 	   *prev_hint_str = NULL;
 
 	/*
-	 * Use standard planner if pg_hint_plan is disabled or current nesting 
+	 * Use standard planner if pg_hint_plan is disabled or current nesting
 	 * depth is nesting depth of SPI calls. Other hook functions try to change
 	 * plan with current_hint_state if any, so set it to NULL.
 	 */
@@ -3062,10 +3062,10 @@ pg_hint_plan_planner(Query *parse, const char *query_string, int cursorOptions,
 			pfree((void *)current_hint_str);
 			current_hint_str = NULL;
 		}
-		
+
 		goto standard_planner_proc;
 	}
-	
+
 	/*
 	 * Push new hint struct to the hint stack to disable previous hint context.
 	 */
@@ -3078,7 +3078,7 @@ pg_hint_plan_planner(Query *parse, const char *query_string, int cursorOptions,
 	setup_guc_enforcement(current_hint_state->set_hints,
 						   current_hint_state->num_hints[HINT_TYPE_SET],
 						   current_hint_state->context);
-	
+
 	current_hint_state->init_scan_mask = get_current_scan_mask();
 	current_hint_state->init_join_mask = get_current_join_mask();
 	current_hint_state->init_min_para_tablescan_size =
@@ -3101,7 +3101,7 @@ pg_hint_plan_planner(Query *parse, const char *query_string, int cursorOptions,
 	{
 		ereport(pg_hint_plan_debug_message_level,
 				(errhidestmt(msgqno != qno),
-				 errmsg("pg_hint_plan%s: planner", qnostr))); 
+				 errmsg("pg_hint_plan%s: planner", qnostr)));
 		msgqno = qno;
 	}
 
@@ -3113,7 +3113,7 @@ pg_hint_plan_planner(Query *parse, const char *query_string, int cursorOptions,
 	recurse_level++;
 	prev_hint_str = current_hint_str;
 	current_hint_str = NULL;
-	
+
 	/*
 	 * Use PG_TRY mechanism to recover GUC parameters and current_hint_state to
 	 * the state when this planner started when error occurred in planner.
@@ -3286,7 +3286,7 @@ find_parallel_hint(PlannerInfo *root, Index relid)
 
 	/*
 	 * Parallel planning is appliable only on base relation, which has
-	 * RelOptInfo. 
+	 * RelOptInfo.
 	 */
 	if (!rel)
 		return NULL;
@@ -3483,7 +3483,7 @@ restrict_indexes(PlannerInfo *root, ScanMethodHint *hint, RelOptInfo *rel,
 						p_info->indcollation[i] != info->indexcollations[i] ||
 						p_info->opclass[i] != info->opcintype[i])
 						break;
-					
+
 					/*
 					 * Compare index ordering if this index is ordered.
 					 *
@@ -3594,7 +3594,7 @@ restrict_indexes(PlannerInfo *root, ScanMethodHint *hint, RelOptInfo *rel,
 
 		if (!use_index)
 			rel->indexlist = foreach_delete_current(rel->indexlist, cell);
-			
+
 		pfree(indexname);
 	}
 
@@ -3611,7 +3611,7 @@ restrict_indexes(PlannerInfo *root, ScanMethodHint *hint, RelOptInfo *rel,
 			disprelname = get_rel_name(rte->relid);
 		else
 			disprelname = hint->relname;
-			
+
 
 		initStringInfo(&rel_buf);
 		quote_value(&rel_buf, disprelname);
@@ -3626,7 +3626,7 @@ restrict_indexes(PlannerInfo *root, ScanMethodHint *hint, RelOptInfo *rel,
 	}
 }
 
-/* 
+/*
  * Return information of index definition.
  */
 static ParentIndexInfo *
@@ -3796,7 +3796,7 @@ setup_hint_enforcement(PlannerInfo *root, RelOptInfo *rel,
 		 * redundant setup cost.
 		 */
 		current_hint_state->parent_relid = new_parent_relid;
-				
+
 		/* Find hints for the parent */
 		current_hint_state->parent_scan_hint =
 			find_scan_hint(root, current_hint_state->parent_relid);
@@ -4428,7 +4428,7 @@ make_join_rel_wrapper(PlannerInfo *root, RelOptInfo *rel1, RelOptInfo *rel2)
 	/* reject non-matching hints */
 	if (join_hint && join_hint->inner_nrels != 0)
 		join_hint = NULL;
-	
+
 	if (memoize_hint && memoize_hint->inner_nrels != 0)
 		memoize_hint = NULL;
 
@@ -4620,7 +4620,7 @@ pg_hint_plan_join_search(PlannerInfo *root, int levels_needed,
 	{
 		ListCell   *lc;
 		int 		nworkers = 0;
-	
+
 		foreach (lc, initial_rels)
 		{
 			ListCell *lcp;

pg_stat_statements.c

@@ -1,7 +1,7 @@
 /*-------------------------------------------------------------------------
  *
  * pg_stat_statements.c
- * 
+ *
  * Part of pg_stat_statements.c in PostgreSQL 10.
  *
  * Copyright (c) 2008-2020, PostgreSQL Global Development Group