Apply suggestions from code review

Co-authored-by: Robert Pająk <[email protected]>

sdk/metric/internal/aggregate/exemplar.go

@@ -17,7 +17,7 @@ var exemplarPool = sync.Pool{
 func collectExemplars[N int64 | float64](out *[]metricdata.Exemplar[N], f func(*[]exemplar.Exemplar)) {
 	dest := exemplarPool.Get().(*[]exemplar.Exemplar)
 	defer func() {
-		clear(*dest) // Erase elements to let GC collect objects
+		clear(*dest) // Erase elements to let GC collect objects.
 		*dest = (*dest)[:0]
 		exemplarPool.Put(dest)
 	}()

sdk/metric/pipeline.go

@@ -115,7 +115,7 @@ func (p *pipeline) produce(ctx context.Context, rm *metricdata.ResourceMetrics)
 		}
 		if err := ctx.Err(); err != nil {
 			rm.Resource = nil
-			clear(rm.ScopeMetrics) // Erase elements to let GC collect objects
+			clear(rm.ScopeMetrics) // Erase elements to let GC collect objects.
 			rm.ScopeMetrics = rm.ScopeMetrics[:0]
 			return err
 		}
@@ -129,7 +129,7 @@ func (p *pipeline) produce(ctx context.Context, rm *metricdata.ResourceMetrics)
 		if err := ctx.Err(); err != nil {
 			// This means the context expired before we finished running callbacks.
 			rm.Resource = nil
-			clear(rm.ScopeMetrics) // Erase elements to let GC collect objects
+			clear(rm.ScopeMetrics) // Erase elements to let GC collect objects.
 			rm.ScopeMetrics = rm.ScopeMetrics[:0]
 			return err
 		}

sdk/trace/span.go

@@ -639,7 +639,7 @@ func (s *recordingSpan) dedupeAttrsFromRecord(record map[attribute.Key]int) {
 			record[a.Key] = len(unique) - 1
 		}
 	}
-	clear(s.attributes[len(unique):]) // Erase unneeded elements to let GC collect objects
+	clear(s.attributes[len(unique):]) // Erase unneeded elements to let GC collect objects.
 	s.attributes = unique
 }