Fix a crash when inserting a multi-line content into cell.

Change-Id: Idf2b6ca6873860a9bb3d2dae646b0383435e58c9

editeng/source/editeng/editdoc.cxx

@@ -1732,6 +1732,12 @@ sal_Unicode ContentNode::GetChar(sal_uInt16 nPos) const
     return maString.GetChar(nPos);
 }
 
+void ContentNode::EnsureWrongList()
+{
+    if (!mpWrongList)
+        CreateWrongList();
+}
+
 WrongList* ContentNode::GetWrongList()
 {
     return mpWrongList.get();

editeng/source/editeng/editdoc.hxx

@@ -283,6 +283,7 @@ public:
 
     void            CreateDefFont();
 
+    void EnsureWrongList();
     WrongList* GetWrongList();
     const WrongList* GetWrongList() const;
     void SetWrongList( WrongList* p );

editeng/source/editeng/impedit4.cxx

@@ -2285,6 +2285,7 @@ void ImpEditEngine::DoOnlineSpelling( ContentNode* pThisNodeOnly, bool bSpellAtC
         if ( pThisNodeOnly )
             pNode = pThisNodeOnly;
 
+        pNode->EnsureWrongList();
         if (!pNode->GetWrongList()->IsValid())
         {
             WrongList* pWrongList = pNode->GetWrongList();