syntax-check: mock-noinline: fix after G_GNUC attribute invocations

We started using G_GNUC macros instead of ATTRIBUTE for some attributes.
Adjust this syntax-check accordingly.
Signed-off-by: NJán Tomko <jtomko@redhat.com>
Reviewed-by: NMichal Privoznik <mprivozn@redhat.com>

build-aux/mock-noinline.pl

@@ -40,7 +40,7 @@ sub scan_annotations {
     while (<FH>) {
         if (/^\s*(\w+)\(/ || /^(?:\w+\*?\s+)+(?:\*\s*)?(\w+)\(/) {
             my $name = $1;
-            if ($name !~ /ATTRIBUTE/) {
+            if ($name !~ /(?:G_GNUC|ATTRIBUTE)/) {
                 $func = $name;
             }
         } elsif (/^\s*$/) {