ext/libsass/src/source_map.hpp in sassc-1.8.3 vs ext/libsass/src/source_map.hpp in sassc-1.8.4

@@ -26,11 +26,11 @@
 
     void append(const Offset& offset);
     void prepend(const Offset& offset);
     void append(const OutputBuffer& out);
     void prepend(const OutputBuffer& out);
-    void add_open_mapping(AST_Node* node);
-    void add_close_mapping(AST_Node* node);
+    void add_open_mapping(const AST_Node* node);
+    void add_close_mapping(const AST_Node* node);
 
     std::string render_srcmap(Context &ctx);
     ParserState remap(const ParserState& pstate);
 
   private: