checkpatch: don't warn on blank lines before/after braces as often

Check to make sure the blank lines aren't comment lines like:

  bool foo(bool bar)
  {
	/* Don't warn on a leading comment */
	return !bar;
	/* Don't warn on a trailing comment either */
  }
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

scripts/checkpatch.pl

@@ -3258,11 +3258,11 @@ sub process {
 		}
 
 # check for unnecessary blank lines around braces
-		if (($line =~ /^.\s*}\s*$/ && $prevline =~ /^.\s*$/)) {
+		if (($line =~ /^.\s*}\s*$/ && $prevrawline =~ /^.\s*$/)) {
 			CHK("BRACES",
 			    "Blank lines aren't necessary before a close brace '}'\n" . $hereprev);
 		}
-		if (($line =~ /^.\s*$/ && $prevline =~ /^..*{\s*$/)) {
+		if (($rawline =~ /^.\s*$/ && $prevline =~ /^..*{\s*$/)) {
 			CHK("BRACES",
 			    "Blank lines aren't necessary after an open brace '{'\n" . $hereprev);
 		}