PAL10696 - crash if press "Shift+C" when there is no viewer

diff --git a/src/Qtx/QtxWorkstack.cxx b/src/Qtx/QtxWorkstack.cxx
index 72275a837bdb3e4195a14230ee870cb5786e90dc..e9a27a3ad266c5de330f4beebfdc0362b0015028 100644 (file)
--- a/src/Qtx/QtxWorkstack.cxx
+++ b/src/Qtx/QtxWorkstack.cxx
@@ -789,7 +789,7 @@ void QtxWorkstack::onCloseWindow()
 {
   if ( myWorkWin )
     myWorkWin->close();
-  else
+  else if( activeWindow() )
     activeWindow()->close();
 }