fixed macros

git-svn-id: https://asn1c.svn.sourceforge.net/svnroot/asn1c/trunk@1361 59561ff5-6e30-0410-9f3c-9617f08c8826
diff --git a/skeletons/asn_internal.h b/skeletons/asn_internal.h
index 674ed51..249d7ef 100644
--- a/skeletons/asn_internal.h
+++ b/skeletons/asn_internal.h
@@ -37,9 +37,9 @@
 #ifdef	__GNUC__
 #ifdef	ASN_THREAD_SAFE
 #define	asn_debug_indent	0
-#endif
+#else	/* !ASN_THREAD_SAFE */
 int asn_debug_indent;
-#endif
+#endif	/* ASN_THREAD_SAFE */
 #define	ASN_DEBUG(fmt, args...)	do {			\
 		int adi = asn_debug_indent;		\
 		while(adi--) fprintf(stderr, " ");	\