vm_method.c: constify

* vm_method.c (rb_resolve_refined_method): constify.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42902 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

method.h

@@ -115,7 +115,7 @@ rb_method_entry_t *rb_method_entry(VALUE klass, ID id, VALUE *define_class_ptr);
 rb_method_entry_t *rb_method_entry_at(VALUE obj, ID id);
 void rb_add_refined_method_entry(VALUE refined_class, ID mid);
 rb_method_entry_t *rb_resolve_refined_method(VALUE refinements,
-					     rb_method_entry_t *me,
+					     const rb_method_entry_t *me,
 					     VALUE *defined_class_ptr);
 rb_method_entry_t *rb_method_entry_with_refinements(VALUE klass, ID id,
 						    VALUE *defined_class_ptr);

vm_method.c

@@ -598,7 +598,7 @@ rb_method_entry(VALUE klass, ID id, VALUE *defined_class_ptr)
 
 static rb_method_entry_t *
 get_original_method_entry(VALUE refinements,
-			  rb_method_entry_t *me,
+			  const rb_method_entry_t *me,
 			  VALUE *defined_class_ptr)
 {
     if (me->def->body.orig_me) {
@@ -614,7 +614,7 @@ get_original_method_entry(VALUE refinements,
 }
 
 rb_method_entry_t *
-rb_resolve_refined_method(VALUE refinements, rb_method_entry_t *me,
+rb_resolve_refined_method(VALUE refinements, const rb_method_entry_t *me,
 			  VALUE *defined_class_ptr)
 {
     if (me && me->def->type == VM_METHOD_TYPE_REFINED) {
@@ -637,7 +637,7 @@ rb_resolve_refined_method(VALUE refinements, rb_method_entry_t *me,
 	}
     }
     else {
-	return me;
+	return (rb_method_entry_t *)me;
     }
 }