fix chatroom create and send message crash bug

Author: huangminlinux

example/ios/JMessageDemo/AppDelegate.m

@@ -18,8 +18,8 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
 {
   NSURL *jsCodeLocation;
 
-  jsCodeLocation = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index.ios" fallbackResource:nil];
-//  jsCodeLocation = [NSURL URLWithString:@"http://192.168.9.113:8081/index.ios.bundle?platform=ios&dev=true"];
+//  jsCodeLocation = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index.ios" fallbackResource:nil];
+  jsCodeLocation = [NSURL URLWithString:@"http://192.168.10.155:8081/index.ios.bundle?platform=ios&dev=true"];
   RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL:jsCodeLocation
                                                       moduleName:@"ReactJChat"
                                                initialProperties:nil