Fix music crash when search song.

BZ: 26647

Change-Id: Ib65d7f505e60889c23b459b98425d52daf169629
Author: b359 <b359@borqs.com>
Signed-off-by: Xiaokang Qin <xiaokang.qin@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Author-tracking-BZ: 26647
diff --git a/src/com/android/music/QueryBrowserActivity.java b/src/com/android/music/QueryBrowserActivity.java
index 977650c..fb29a3d 100644
--- a/src/com/android/music/QueryBrowserActivity.java
+++ b/src/com/android/music/QueryBrowserActivity.java
@@ -210,7 +210,9 @@
         // Because we pass the adapter to the next activity, we need to make
         // sure it doesn't keep a reference to this activity. We can do this
         // by clearing its DatasetObservers, which setListAdapter(null) does.
-        setListAdapter(null);
+        if (getListView() != null) {
+            setListAdapter(null);
+        }
         mAdapter = null;
         super.onDestroy();
     }