code improve

Author: Wonday

ios/RCTAliyunPush/AliyunPushManager.m

@@ -477,7 +477,7 @@ - (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNoti
     UNNotificationContent *content = request.content;
     NSDictionary *userInfo = content.userInfo;
 
-    NSMutableDictionary *notificationDict = [NSMutableDictionary dictionaryWithCapacity:5];
+    NSMutableDictionary *notificationDict = [NSMutableDictionary dictionary];
 
     // 通知时间
     notificationDict[@"date"] = response.notification.date;
@@ -539,7 +539,7 @@ - (void)application:(UIApplication *)application didReceiveRemoteNotification:(N
     // 取得APNS通知内容
     NSDictionary *aps = [userInfo valueForKey:@"aps"];
 
-    NSMutableDictionary *notificationDict = [NSMutableDictionary dictionaryWithCapacity:5];
+    NSMutableDictionary *notificationDict = [NSMutableDictionary dictionary];
 
     // 通知时间
     notificationDict[@"date"] = [NSDate init];