Release lock when thumbnailer is interrupted

CID #1226337

vlc-android/src/org/videolan/vlc/Thumbnailer.java

@@ -149,7 +149,6 @@ public class Thumbnailer implements Runnable {
                 mVideoBrowser.resetBarrier();
             lock.lock();
             // Get the id of the file browser item to create its thumbnail.
-            boolean interrupted = false;
             while (mItems.size() == 0) {
                 try {
                     if (mVideoBrowser != null) {
@@ -159,15 +158,11 @@ public class Thumbnailer implements Runnable {
                     totalCount = 0;
                     notEmpty.await();
                 } catch (InterruptedException e) {
-                    interrupted = true;
+                    lock.unlock();
                     Log.i(TAG, "interruption probably requested by stop()");
                     break;
                 }
             }
-            if (interrupted) {
-                lock.unlock();
-                break;
-            }
             total = totalCount;
             MediaWrapper item = mItems.poll();
             lock.unlock();