silence warning for our LC_NUMERIC_LOCK macro

The real LC_NUMERIC_LOCK expects a parameter, and we are passing one, so
the macro definition should accept a parameter to properly consume the
argument.

Author: haarg

vutil/vutil.h

@@ -223,7 +223,7 @@ const char * Perl_prescan_version(pTHX_ const char *s, bool strict, const char**
 
 
 #if PERL_VERSION_LT(5,27,9)
-#  define LC_NUMERIC_LOCK
+#  define LC_NUMERIC_LOCK(cond)
 #  define LC_NUMERIC_UNLOCK
 #  if PERL_VERSION_LT(5,19,0)
 #    undef STORE_LC_NUMERIC_SET_STANDARD