Fix typo

Change-Id: I02e84f888950c85e19f50ffe7ace52e71a24e397
Reviewed-on: https://gerrit.libreoffice.org/71266
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

sw/source/core/edit/edtox.cxx

@@ -137,7 +137,7 @@ void SwEditShell::InsertTableOf( const SwTOXBase& rTOX, const SfxItemSet* pSet )
     // Insert listing
     const SwTOXBaseSection* pTOX = mxDoc->InsertTableOf(
                 *GetCursor()->GetPoint(), rTOX, pSet, true, GetLayout() );
-    OSL_ENSURE(pTOX, "No current TOx");
+    OSL_ENSURE(pTOX, "No current TOX");
 
     // start formatting
     CalcLayout();