Fix an oops

Author: Alphalaneous

src/ui/nodes/MCButton.cpp

@@ -17,7 +17,7 @@ MCButton* MCButton::create(gd::string text, float width, CCObject* target, SEL_M
         delete ret;
         ret = nullptr;
     }
-    return nullptr;
+    return ret;
 }
 
 void MCButton::setInvisible(){

src/ui/nodes/MCButtonChild.cpp

@@ -68,7 +68,7 @@ MCButtonChild* MCButtonChild::create(gd::string text, float width, CCObject* tar
         delete ret;
         ret = nullptr;
     }
-    return nullptr;
+    return ret;
 }
 
 

src/ui/nodes/MCLabel.cpp

@@ -24,7 +24,7 @@ MCLabel* MCLabel::create(std::wstring text, std::string font){
         delete ret;
         ret = nullptr;
     }
-    return nullptr;
+    return ret;
 }
 
 

src/ui/nodes/MCScrollBar.cpp

@@ -8,7 +8,7 @@ MCScrollBar* MCScrollBar::create(ScrollLayer* node, float height){
         delete ret;
         ret = nullptr;
     }
-    return nullptr;
+    return ret;
 }
 
 bool MCScrollBar::init(ScrollLayer* node, float height){