Reset progress state to no progress when destructing.

Author: Chaobin Zhang

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77615 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/taskbarbutton.cpp

@@ -706,6 +706,11 @@ wxAppProgressIndicator::wxAppProgressIndicator(wxTopLevelWindow *parent, int max
 {
 }
 
+wxAppProgressIndicator::~wxAppProgressIndicator()
+{
+    m_taskBarButton->SetProgressState(wxTASKBAR_BUTTON_NO_PROGRESS);
+}
+
 bool wxAppProgressIndicator::Update(int value)
 {
     wxASSERT_MSG( value <= m_maxValue, wxT("invalid progress value") );