reintroduce trailing whitespace for cleaner commit

r/configure

@@ -50,10 +50,10 @@
 #   Currently the configure script doesn't offer much to make this easy.
 #   If you expect to rebuild multiple times, you should set up a dev
 #   environment.
-# * Installing a dev version as a regular developer.
+# * Installing a dev version as a regular developer. 
 #   The best way is to maintain your own cmake build and install it
 #   to a directory (not system) that you set as the env var
-#   $ARROW_HOME.
+#   $ARROW_HOME.  
 #
 # For more information, see the various installation and developer vignettes.
 
@@ -177,7 +177,7 @@ find_arrow () {
     else
       PC_LIB_VERSION=`grep '^Version' ${_LIBARROW_FOUND}/lib/pkgconfig/arrow.pc | sed s/Version:\ //`
     fi
-    # This is in an R script for convenience and testability.
+    # This is in an R script for convenience and testability. 
     # Success means the found C++ library is ok to use.
     # Error means the versions don't line up and we shouldn't use it.
     # More specific messaging to the user is in the R script
@@ -253,7 +253,6 @@ do_autobrew () {
       cp tools/autobrew .
     fi
   fi
-
   if ! . autobrew; then
     echo "Failed to retrieve binary for ${PKG_BREW_NAME}"
   fi