Make it build again on non-Android

Fix warning about unused variable.
Remove spurious include.
Fix warning about printf format type mismatch.

Change-Id: Ibeeb33a55175e0ec1e5210211d8844df0bbe3bca

src/desktop/SndFile.c

@@ -78,7 +78,7 @@ void SndFile_Callback(SLBufferQueueItf caller, void *pContext)
         result = IBufferQueue_Enqueue(caller, pBuffer, size);
         // not much we can do if the Enqueue fails, so we'll just drop the decoded data
         if (SL_RESULT_SUCCESS != result) {
-            SL_LOGE("enqueue failed 0x%lx", result);
+            SL_LOGE("enqueue failed 0x%x", result);
         }
     } else {
         thisAP->mPlay.mState = SL_PLAYSTATE_PAUSED;

src/itf/IEngine.c

@@ -18,8 +18,6 @@
 
 #include "sles_allinclusive.h"
 
-#include <system/audio.h>
-
 static SLresult IEngine_CreateLEDDevice(SLEngineItf self, SLObjectItf *pDevice, SLuint32 deviceID,
     SLuint32 numInterfaces, const SLInterfaceID *pInterfaceIds, const SLboolean *pInterfaceRequired)
 {

src/objects/CMediaPlayer.c

@@ -27,11 +27,11 @@ using namespace android;
 
 XAresult CMediaPlayer_Realize(void *self, XAboolean async)
 {
-    CMediaPlayer *thiz = (CMediaPlayer *) self;
-
     XAresult result = XA_RESULT_SUCCESS;
 
 #ifdef ANDROID
+    CMediaPlayer *thiz = (CMediaPlayer *) self;
+
     // realize player
     result = android_Player_realize(thiz, async);
     if (XA_RESULT_SUCCESS == result) {