NuPlayer: use kWhatPauseOnBufferingStart instead of kWhatBufferingStart in RTSPSource.

Bug: 24295007
Change-Id: I75026f7c96b40b0d552d849772760367f9859d1b
diff --git a/media/libmediaplayerservice/nuplayer/RTSPSource.cpp b/media/libmediaplayerservice/nuplayer/RTSPSource.cpp
index c861fd1..2ecab6d 100644
--- a/media/libmediaplayerservice/nuplayer/RTSPSource.cpp
+++ b/media/libmediaplayerservice/nuplayer/RTSPSource.cpp
@@ -725,7 +725,7 @@
         mBuffering = true;
 
         sp<AMessage> notify = dupNotify();
-        notify->setInt32("what", kWhatBufferingStart);
+        notify->setInt32("what", kWhatPauseOnBufferingStart);
         notify->post();
     }
 }
@@ -741,7 +741,7 @@
         mBuffering = false;
 
         sp<AMessage> notify = dupNotify();
-        notify->setInt32("what", kWhatBufferingEnd);
+        notify->setInt32("what", kWhatResumeOnBufferingEnd);
         notify->post();
     }