missing underscore

Author: shirakaba

packages/react-native/React/CoreModules/RCTDevLoadingView.mm

@@ -123,7 +123,7 @@ - (void)showMessage:(NSString *)message color:(RCTUIColor *)color backgroundColo
 
     self->_showDate = [NSDate date];
 
-    if (!self->label) {
+    if (!self->_label) {
       self->_label = [[RCTUILabel alloc] init]; // [macOS]
       self->_label.translatesAutoresizingMaskIntoConstraints = NO;
       self->_label.font = [UIFont monospacedDigitSystemFontOfSize:12.0 weight:UIFontWeightRegular];