Merge pull request #758 from opencollector/moriyoshi/fix-warnings-on-set-badge-number

Dispatch setApplicationIconBadgeNumber on main thread to prevent runtime warnings

ios/RNFIRMessaging.m

@@ -367,7 +367,9 @@ RCT_EXPORT_METHOD(removeAllDeliveredNotifications)
     if([UNUserNotificationCenter currentNotificationCenter] != nil){
         [[UNUserNotificationCenter currentNotificationCenter] removeAllDeliveredNotifications];
     } else {
+        dispatch_async(dispatch_get_main_queue(), ^{
             [RCTSharedApplication() setApplicationIconBadgeNumber: 0];
+        });
     }
 }
 
@@ -416,7 +418,9 @@ RCT_EXPORT_METHOD(getScheduledLocalNotifications:(RCTPromiseResolveBlock)resolve
 
 RCT_EXPORT_METHOD(setBadgeNumber: (NSInteger) number)
 {
+    dispatch_async(dispatch_get_main_queue(), ^{
         [RCTSharedApplication() setApplicationIconBadgeNumber:number];
+    });
 }
 
 RCT_EXPORT_METHOD(getBadgeNumber: (RCTPromiseResolveBlock)resolve rejecter:(RCTPromiseRejectBlock)reject)