`rb_add_method` is void function.

* method.h (rb_add_method): make it void function because
  nobody use a return value.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67444 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

method.h

@@ -188,8 +188,8 @@ typedef struct rb_method_definition_struct rb_method_definition_t;
 void rb_add_method_cfunc(VALUE klass, ID mid, VALUE (*func)(ANYARGS), int argc, rb_method_visibility_t visi);
 void rb_add_method_iseq(VALUE klass, ID mid, const rb_iseq_t *iseq, rb_cref_t *cref, rb_method_visibility_t visi);
 void rb_add_refined_method_entry(VALUE refined_class, ID mid);
+void rb_add_method(VALUE klass, ID mid, rb_method_type_t type, void *option, rb_method_visibility_t visi);
 
-rb_method_entry_t *rb_add_method(VALUE klass, ID mid, rb_method_type_t type, void *option, rb_method_visibility_t visi);
 rb_method_entry_t *rb_method_entry_set(VALUE klass, ID mid, const rb_method_entry_t *, rb_method_visibility_t noex);
 rb_method_entry_t *rb_method_entry_create(ID called_id, VALUE klass, rb_method_visibility_t visi, const rb_method_definition_t *def);
 

vm_method.c

@@ -657,16 +657,14 @@ method_added(VALUE klass, ID mid)
     }
 }
 
-rb_method_entry_t *
+void
 rb_add_method(VALUE klass, ID mid, rb_method_type_t type, void *opts, rb_method_visibility_t visi)
 {
-    rb_method_entry_t *me = rb_method_entry_make(klass, mid, klass, visi, type, NULL, mid, opts);
+    rb_method_entry_make(klass, mid, klass, visi, type, NULL, mid, opts);
 
     if (type != VM_METHOD_TYPE_UNDEF && type != VM_METHOD_TYPE_REFINED) {
 	method_added(klass, mid);
     }
-
-    return me;
 }
 
 MJIT_FUNC_EXPORTED void