a11y crash on teardown of FmXGridPeer

the XAccessible is destroyed before the attempt to dispose via
the IAccessibleBrowseBox*

so call that first before the XAccessible is destroyed

Change-Id: I908a3fbc05f92b5e56b8b6f2bc0b27757d39d1fb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/118798
Tested-by: Jenkins
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>

1 files changed, 10 insertions, 4 deletions

diff --git a/svtools/source/brwbox/brwbox1.cxx b/svtools/source/brwbox/brwbox1.cxx
index e42dad407478..8303e0f55557 100644
--- a/svtools/source/brwbox/brwbox1.cxx
+++ b/svtools/source/brwbox/brwbox1.cxx
@@ -173,16 +173,22 @@ BrowseBox::~BrowseBox()
     disposeOnce();
 }
 
-void BrowseBox::dispose()
+void BrowseBox::DisposeAccessible()
 {
-    SAL_INFO("svtools", "BrowseBox:dispose " << this );
-
-    if ( m_pImpl->m_pAccessible )
+    if (m_pImpl->m_pAccessible )
     {
         disposeAndClearHeaderCell(m_pImpl->m_aColHeaderCellMap);
         disposeAndClearHeaderCell(m_pImpl->m_aRowHeaderCellMap);
         m_pImpl->m_pAccessible->dispose();
+        m_pImpl->m_pAccessible = nullptr;
     }
+}
+
+void BrowseBox::dispose()
+{
+    SAL_INFO("svtools", "BrowseBox:dispose " << this );
+
+    DisposeAccessible();
 
     Hide();
     pDataWin->pHeaderBar.disposeAndClear();