Fixed warnings

src/osgPlugins/lwo/iffparser.h

@@ -51,6 +51,9 @@ namespace iff
 		inline std::ostream &os() { return os_; }
 
 	private:		
+		GenericParser& operator = (const GenericParser&) { return *this; }
+
+
 		Chunk_list chunks_;
 		std::ostream &os_;
 	};

src/osgPlugins/lwo/lwo2parser.h

@@ -34,6 +34,8 @@ namespace lwo2
 	protected:
 		virtual iff::Chunk *parse_chunk_data(const std::string &tag, const std::string &context, Iter it, Iter end);
 		iff::Chunk *parse_subchunk(Iter &it, const std::string &context);
+                
+                Parser& operator = (const Parser&) { return *this; }
 	};