checkpatch: fix false positives for --strict "space after cast" test

Commit 89da401f6cff ("checkpatch: improve "no space after cast" test")
in -next improved the cast test for non pointer types, but also
introduced false positives for some types of static inlines.

Add a test for an open brace to the exclusions to avoid these false
positives.

Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Hartley Sweeten <HartleyS@visionengravers.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

scripts/checkpatch.pl

@@ -2456,7 +2456,7 @@ sub process {
 			}
 		}
 
-		if ($line =~ /^\+.*\(\s*$Type\s*\)[ \t]+(?!$Assignment|$Arithmetic)/) {
+		if ($line =~ /^\+.*\(\s*$Type\s*\)[ \t]+(?!$Assignment|$Arithmetic|{)/) {
 			if (CHK("SPACING",
 				"No space is necessary after a cast\n" . $herecurr) &&
 			    $fix) {