File libsmi-c99.patch of Package libsmi

--- a/lib/parser-sming.y
+++ b/lib/parser-sming.y
@@ -17,7 +17,7 @@
     
 #ifdef BACKEND_SMING
 
-#define _ISOC99_SOURCE
+
 #include <stdio.h>
 #include <errno.h>
 #include <stdlib.h>