loplugin:cstylecast, involving pointer to incomplete type

Change-Id: I406d56236d9e87103009703b677bee40398ed1a2

sw/inc/ndarr.hxx

@@ -140,8 +140,7 @@ public:
     typedef ::std::vector<SwNodeRange> NodeRanges_t;
     typedef ::std::vector<NodeRanges_t> TableRanges_t;
 
-    SwNodePtr operator[]( sal_uLong n ) const
-        { return (SwNodePtr)BigPtrArray::operator[] ( n ); }
+    SwNodePtr operator[]( sal_uLong n ) const; // defined in node.hxx
 
     sal_uLong Count() const { return BigPtrArray::Count(); }
     void ForEach( FnForEach_SwNodes fnForEach, void* pArgs = 0 )

sw/inc/node.hxx

@@ -743,6 +743,11 @@ inline SwDummySectionNode::SwDummySectionNode( const SwNodeIndex &rWhere )
 {
 }
 
+inline SwNodePtr SwNodes::operator[]( sal_uLong n ) const
+{
+    return static_cast<SwNodePtr>(BigPtrArray::operator[] ( n ));
+}
+
 #endif
 
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