Added the base class symbol to its enclosing class declaration.

src/shared/cplusplus/Bind.cpp

@@ -292,7 +292,7 @@ void Bind::baseSpecifier(BaseSpecifierAST *ast, unsigned colon_token, Class *kla
         const int visibility = visibilityForAccessSpecifier(tokenKind(ast->access_specifier_token));
         baseClass->setVisibility(visibility); // ### well, not exactly.
     }
-    klass->addMember(baseClass);
+    klass->addBaseClass(baseClass);
     ast->symbol = baseClass;
 }