Merge pull request #1321 from suzukaze/refactor-range-c

Refactor mrb_range_eq() func in range.c.

src/range.c

@@ -152,30 +152,22 @@ mrb_range_eq(mrb_state *mrb, mrb_value range)
   struct RRange *rr;
   struct RRange *ro;
   mrb_value obj;
-  mrb_bool eq_p;
 
   mrb_get_args(mrb, "o", &obj);
 
-  if (mrb_obj_equal(mrb, range, obj)) {
-    eq_p = 1;
-  }
-  else if (!mrb_obj_is_instance_of(mrb, obj, mrb_obj_class(mrb, range))) { /* same class? */
-    eq_p = 0;
+  if (mrb_obj_equal(mrb, range, obj)) return mrb_true_value();
+  if (!mrb_obj_is_instance_of(mrb, obj, mrb_obj_class(mrb, range))) { /* same class? */
+    return mrb_false_value();
   }
-  else {
+
   rr = mrb_range_ptr(range);
   ro = mrb_range_ptr(obj);
   if (!mrb_obj_equal(mrb, rr->edges->beg, ro->edges->beg) ||
       !mrb_obj_equal(mrb, rr->edges->end, ro->edges->end) ||
       rr->excl != ro->excl) {
-      eq_p = 0;
+    return mrb_false_value();
   }
-    else {
-      eq_p = 1;
-    }
-  }
-
-  return mrb_bool_value(eq_p);
+  return mrb_true_value();
 }
 
 static int