Remove completely useless mutex

modules/gui/qt4/components/interface_widgets.cpp

@@ -60,7 +60,6 @@
 VideoWidget::VideoWidget( intf_thread_t *_p_i ) : QFrame( NULL ), p_intf( _p_i )
 {
     /* Init */
-    vlc_mutex_init( &lock );
     p_vout = NULL;
     hide(); setMinimumSize( 16, 16 );
     videoSize.rwidth() = -1;
@@ -98,7 +97,6 @@ void VideoWidget::paintEvent(QPaintEvent *ev)
 
 VideoWidget::~VideoWidget()
 {
-    vlc_mutex_lock( &lock );
     if( p_vout )
     {
         if( !p_intf->psz_switch_intf )
@@ -112,8 +110,6 @@ VideoWidget::~VideoWidget()
                 vout_Control( p_vout, VOUT_CLOSE );
         }
     }
-    vlc_mutex_unlock( &lock );
-    vlc_mutex_destroy( &lock );
 }
 
 /**

modules/gui/qt4/components/interface_widgets.hpp

@@ -87,7 +87,6 @@ private:
     intf_thread_t *p_intf;
     vout_thread_t *p_vout;
 
-    vlc_mutex_t lock;
     QSize videoSize;
 
 signals: