call Thaw() instead of DoThaw() so frozen status will be properly updated, and use a loop in case window has been frozen more than once

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72552 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/window.cpp

@@ -2371,8 +2371,8 @@ wxWindowGTK::~wxWindowGTK()
     // avoid problem with GTK+ 2.18 where a frozen window causes the whole
     // TLW to be frozen, and if the window is then destroyed, nothing ever
     // gets painted again
-    if (IsFrozen())
-        DoThaw();
+    while (IsFrozen())
+        Thaw();
 
     if (m_widget)
     {