Remove unused variable

git-svn-id: http://svn.net-core.org/repos/t-engine4@604 51575b47-30f0-44d4-a5cc-537603b46e54

src/lua/lauxlib.c

@@ -554,7 +554,6 @@ static int errfile (lua_State *L, const char *what, int fnameindex) {
 LUALIB_API int luaL_loadfile (lua_State *L, const char *filename) {
   LoadF lf;
   int status, readstatus = 0;
-  int c;
   int fnameindex = lua_gettop(L) + 1;  /* index of filename on the stack */
   lf.extraline = 0;
   lua_pushfstring(L, "@%s", filename);