patch 8.0.0624: warning for unused variable in tiny build

Problem:    Warning for unused variable in tiny build. (Tony Mechelynck)
Solution:   Add an #ifdef.

Author: brammool

src/regexp.c

@@ -359,7 +359,9 @@ static int re_mult_next(char *what);
 
 static char_u e_missingbracket[] = N_("E769: Missing ] after %s[");
 static char_u e_reverse_range[] = N_("E944: Reverse range in character class");
+#ifdef FEAT_MBYTE
 static char_u e_large_class[] = N_("E945: Range too large in character class");
+#endif
 static char_u e_unmatchedpp[] = N_("E53: Unmatched %s%%(");
 static char_u e_unmatchedp[] = N_("E54: Unmatched %s(");
 static char_u e_unmatchedpar[] = N_("E55: Unmatched %s)");

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    624,
 /**/
     623,
 /**/