checkpatch: labels are not possible types

A label is not a candidate for a possible type.  Exclude them.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

scripts/checkpatch.pl

@@ -1324,7 +1324,7 @@ sub process {
 				possible($type, "A:" . $s);
 
 			# definitions in global scope can only start with types
-			} elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b/s) {
+			} elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b\s*(?!:)/s) {
 				possible($1, "B:" . $s);
 			}