Follow raw pointer and sp<> conventions

Unconditional delete for raw pointers.
Use "if (sp != 0)" not "if (sp.get() != 0)" or "if (sp != NULL)".
Use "if (raw != NULL)" not "if (raw)".

Change-Id: I531a8da7c37149261ed2f34b862ec4896a4b785b
diff --git a/media/libmedia/JetPlayer.cpp b/media/libmedia/JetPlayer.cpp
index 8456db5..6cb5b82 100644
--- a/media/libmedia/JetPlayer.cpp
+++ b/media/libmedia/JetPlayer.cpp
@@ -246,14 +246,12 @@
     }//while (1)
 
 threadExit:
-    if (mAudioTrack) {
+    if (mAudioTrack != NULL) {
         mAudioTrack->stop();
         mAudioTrack->flush();
     }
-    if (mAudioBuffer) {
-        delete [] mAudioBuffer;
-        mAudioBuffer = NULL;
-    }
+    delete [] mAudioBuffer;
+    mAudioBuffer = NULL;
     mMutex.lock();
     mTid = -1;
     mCondition.signal();