Reverted to old logic when state is EXIT

Plugins/org.commontk.dah.host/ctkDicomAbstractHost.cpp

@@ -129,7 +129,8 @@ void ctkDicomAbstractHost::notifyStateChanged(ctkDicomAppHosting::State newState
       d_ptr->AppState = ctkDicomAppHosting::IDLE;
       releaseAvailableResources();
     }
-    else if(d_ptr->AppState == ctkDicomAppHosting::IDLE
+    else if(d_ptr->AppState == ctkDicomAppHosting::EXIT
+            || d_ptr->AppState == ctkDicomAppHosting::IDLE
             || d_ptr->AppState == ctkDicomAppHosting::CANCELED)
     {
       d_ptr->AppState = ctkDicomAppHosting::IDLE;