fixed critical bug which causes crash

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@426 90c681e8-e032-0410-971d-27865f9a5e38

2 files changed, 8 insertions, 4 deletions

diff --git a/src/qmmp/output.cpp b/src/qmmp/output.cpp
index a7ae2d8ed..bf08da376 100644
--- a/src/qmmp/output.cpp
+++ b/src/qmmp/output.cpp
@@ -139,12 +139,15 @@ Output::Output (QObject* parent) : QThread (parent), r (stackSize())
 Output::~Output()
 {
     qDebug("Output::~Output()");
-    Visual *visual = 0;
-    foreach(visual, m_vis_map.values ())
+    foreach(Visual *visual, m_vis_map.values ())
     {
+        visual->setOutput(0);
         visual->close();
     }
-    //m_vis_map.clear();
+    foreach (Visual *visual , visuals)  //external
+    {
+        visual->setOutput(0);
+    }
 }
 
 void Output::error ( const QString &e )
@@ -165,6 +168,7 @@ void Output::addVisual ( Visual *v )
 
 void Output::removeVisual (Visual *v)
 {
+    v->setOutput(0);
     visuals.removeAll (v);
     if (m_vis_map.key(v))
     {
diff --git a/src/ui/mainvisual.cpp b/src/ui/mainvisual.cpp
index b52bcc0ce..61807bf11 100644
--- a/src/ui/mainvisual.cpp
+++ b/src/ui/mainvisual.cpp
@@ -166,7 +166,7 @@ void MainVisual::timeout()
         update();
         m_draw = TRUE;
     }
-    else if (m_draw && output() && !output()->isRunning())
+    else if (m_draw && (!output() || !output()->isRunning()))
     {
         m_draw = FALSE;
         m_pixmap = m_bg;