Avoid Calendar instanciations

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

@@ -1524,7 +1524,7 @@ public class PlaybackService extends MediaBrowserServiceCompat implements IVLCVo
         if (!mHasWidget)
             return;
         // no more than one widget mUpdateMeta for each 1/50 of the song
-        long timestamp = Calendar.getInstance().getTimeInMillis();
+        long timestamp = System.currentTimeMillis();
         if (!hasCurrentMedia() || timestamp - mWidgetPositionTimestamp < getCurrentMedia().getLength() / 50)
             return;
         mWidgetPositionTimestamp = timestamp;

vlc-android/src/org/videolan/vlc/gui/dialogs/SleepTimerDialog.java

@@ -72,7 +72,7 @@ public class SleepTimerDialog extends PickTimeFragment {
 
         if (interval < ONE_DAY_IN_MILLIS) {
             Calendar sleepTime = Calendar.getInstance();
-            sleepTime.setTimeInMillis(Calendar.getInstance().getTimeInMillis() + interval);
+            sleepTime.setTimeInMillis(sleepTime.getTimeInMillis() + interval);
             sleepTime.set(Calendar.SECOND, 0);
             AdvOptionsDialog.setSleep(sleepTime);
         }