Resolves: fdo#56549 crash in format->autocorrect->apply and edit changes

regression from cad9afa1

Change-Id: I1aa36bf86969a5a90456817d360d59125948e519

sw/inc/shellres.hxx

@@ -87,7 +87,7 @@ struct SW_DLLPUBLIC ShellResource : public Resource
 
 private:
     void _GetAutoFmtNameLst() const;
-    std::vector<String> *pAutoFmtNameLst;
+    mutable std::vector<String> *pAutoFmtNameLst;
     String          sPageDescFirstName;
     String          sPageDescFollowName;
     String          sPageDescName;

sw/source/ui/utlui/initui.cxx

@@ -229,10 +229,10 @@ struct ImpAutoFmtNameListLoader : public Resource
 
 void ShellResource::_GetAutoFmtNameLst() const
 {
-    std::vector<String>* pLst(pAutoFmtNameLst);
-    pLst = new std::vector<String>;
-    pLst->reserve(STR_AUTOFMTREDL_END);
-    ImpAutoFmtNameListLoader aTmp( *pLst );
+    assert(!pAutoFmtNameLst);
+    pAutoFmtNameLst = new std::vector<String>;
+    pAutoFmtNameLst->reserve(STR_AUTOFMTREDL_END);
+    ImpAutoFmtNameListLoader aTmp(*pAutoFmtNameLst);
 }
 
 ImpAutoFmtNameListLoader::ImpAutoFmtNameListLoader( std::vector<String>& rLst )