Merge pull request #519 from iij/pr-mruby-exit-status-with-mrb

fix mruby exit status with mrb file.

tools/mruby/mruby.c

@@ -196,8 +196,10 @@ main(int argc, char **argv)
     }
     else if (!args.check_syntax) {
       mrb_run(mrb, mrb_proc_new(mrb, mrb->irep[n]), mrb_top_self(mrb));
+      n = 0;
       if (mrb->exc) {
         p(mrb, mrb_obj_value(mrb->exc));
+        n = -1;
       }
     }
   }