Don't crash if createDataChannel fails.

webrtc/api/android/jni/peerconnection_jni.cc

 /*
  *  Copyright 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 1708 matching lines @@
 JOW(jobject, PeerConnection_createDataChannel)(
     JNIEnv* jni, jobject j_pc, jstring j_label, jobject j_init) {
   DataChannelInit init = JavaDataChannelInitToNative(jni, j_init);
   rtc::scoped_refptr<DataChannelInterface> channel(
       ExtractNativePC(jni, j_pc)->CreateDataChannel(
           JavaToStdString(jni, j_label), &init));
   // Mustn't pass channel.get() directly through NewObject to avoid reading its
   // vararg parameter as 64-bit and reading memory that doesn't belong to the
   // 32-bit parameter.
   jlong nativeChannelPtr = jlongFromPointer(channel.get());
-  RTC_CHECK(nativeChannelPtr) << "Failed to create DataChannel";
+  if (!nativeChannelPtr) {
+    LOG(LS_ERROR) << "Failed to create DataChannel";
+    return nullptr;
+  }
   jclass j_data_channel_class = FindClass(jni, "org/webrtc/DataChannel");
   jmethodID j_data_channel_ctor = GetMethodID(
       jni, j_data_channel_class, "<init>", "(J)V");
   jobject j_channel = jni->NewObject(
       j_data_channel_class, j_data_channel_ctor, nativeChannelPtr);
   CHECK_EXCEPTION(jni) << "error during NewObject";
   // Channel is now owned by Java object, and will be freed from there.
   int bumped_count = channel->AddRef();
   RTC_CHECK(bumped_count == 2) << "Unexpected refcount";
   return j_channel;
@@ skipping 605 matching lines @@
   return JavaStringFromStdString(
       jni,
       reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)->id());
 }
 
 JOW(void, RtpReceiver_free)(JNIEnv* jni, jclass, jlong j_rtp_receiver_pointer) {
   reinterpret_cast<RtpReceiverInterface*>(j_rtp_receiver_pointer)->Release();
 }
 
 }  // namespace webrtc_jni