Show version only once with '-v' option in mruby/mrbc

tools/mrbc/mrbc.c

@@ -106,7 +106,7 @@ parse_args(mrb_state *mrb, int argc, char **argv, struct _args *args)
         args->check_syntax = 1;
         break;
       case 'v':
-        mrb_show_version(mrb);
+        if(!args->verbose) mrb_show_version(mrb);
         args->verbose = 1;
         break;
       case 'g':

tools/mruby/mruby.c

@@ -109,7 +109,7 @@ append_cmdline:
       }
       break;
     case 'v':
-      mrb_show_version(mrb);
+      if (!args->verbose) mrb_show_version(mrb);
       args->verbose = 1;
       break;
     case '-':