Merge pull request #1373 from twomedia/develop-v3.5

Fixed CCTextField textField property always being nil on mac.

Author: s1ddok

cocos2d-ui/Platform/Mac/CCPlatformTextFieldMac.m

@@ -58,6 +58,11 @@ - (BOOL)control:(NSControl *)control textShouldEndEditing:(NSText *)fieldEditor
     return YES;
 }
 
+- (id)nativeTextField
+{
+    return _textField;
+}
+
 - (void)setFontSize:(float)fontSize {
     NSFont* font = _textField.font;
     _textField.font = [NSFont fontWithName:font.fontName size:fontSize];