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/services/audioflinger/AudioPolicyService.cpp b/services/audioflinger/AudioPolicyService.cpp
index af464b2..f8b430e 100644
--- a/services/audioflinger/AudioPolicyService.cpp
+++ b/services/audioflinger/AudioPolicyService.cpp
@@ -588,10 +588,10 @@
         }
 
         dumpInternals(fd);
-        if (mAudioCommandThread != NULL) {
+        if (mAudioCommandThread != 0) {
             mAudioCommandThread->dump(fd);
         }
-        if (mTonePlaybackThread != NULL) {
+        if (mTonePlaybackThread != 0) {
             mTonePlaybackThread->dump(fd);
         }