* ext/syck/implicit.c (YYFILL): suppress warnings.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27946 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/syck/implicit.c

@@ -15,7 +15,7 @@
 #define YYCURSOR    cursor
 #define YYMARKER    marker
 #define YYLIMIT     limit
-#define YYFILL(n)
+#define YYFILL(n)   (void)0
 
 void
 try_tag_implicit( SyckNode *n, int taguri )