NuPlayer::Renderer::onPause() - Converted CHECK(!mPaused) to a warning.

 Bug: 17436451

Change-Id: I7e9e0c48bbdd8ab65c5f4a587699a28435bd03f4
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
index aad6e93..067784b 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
+++ b/media/libmediaplayerservice/nuplayer/NuPlayerRenderer.cpp
@@ -893,8 +893,10 @@
 }
 
 void NuPlayer::Renderer::onPause() {
-    CHECK(!mPaused);
-
+    if (mPaused) {
+        ALOGW("Renderer::onPause() called while already paused!");
+        return;
+    }
     {
         Mutex::Autolock autoLock(mLock);
         ++mAudioQueueGeneration;