Bug 1237201 part 6 - Handle Vector OOM in media/webrtc/. r=jesup

media/webrtc/signaling/src/peerconnection/PeerConnectionCtx.cpp

@@ -328,7 +328,9 @@ PeerConnectionCtx::EverySecondTelemetryCallback_m(nsITimer* timer, void *closure
   for (auto p = ctx->mPeerConnections.begin();
         p != ctx->mPeerConnections.end(); ++p) {
     if (p->second->HasMedia()) {
-      queries->append(nsAutoPtr<RTCStatsQuery>(new RTCStatsQuery(true)));
+      if (!queries->append(nsAutoPtr<RTCStatsQuery>(new RTCStatsQuery(true)))) {
+	return;
+      }
       if (NS_WARN_IF(NS_FAILED(p->second->BuildStatsQuery_m(nullptr, // all tracks
                                                             queries->back())))) {
         queries->popBack();

media/webrtc/signaling/src/peerconnection/WebrtcGlobalInformation.cpp

@@ -386,7 +386,9 @@ BuildStatsQueryList(
     if (aPcIdFilter.IsEmpty() ||
         aPcIdFilter.EqualsASCII(pc.second->GetIdAsAscii().c_str())) {
       if (pc.second->HasMedia()) {
-        queries->append(nsAutoPtr<RTCStatsQuery>(new RTCStatsQuery(true)));
+        if (!queries->append(nsAutoPtr<RTCStatsQuery>(new RTCStatsQuery(true)))) {
+	  return NS_ERROR_OUT_OF_MEMORY;
+	}
         rv = pc.second->BuildStatsQuery_m(nullptr, queries->back()); // all tracks
         if (NS_WARN_IF(NS_FAILED(rv))) {
           return rv;