Fix for bug 24965. This makes multiple attributes in same declaration an error in XPIDL. sr=scc, r=rginda

xpcom/typelib/xpidl/xpidl_doc.c

@@ -226,6 +226,8 @@ doc_attribute_declaration(TreeState *state)
 {
     IDL_tree attr = state->tree;
 
+    if (!verify_attribute_declaration(attr))
+        return FALSE;
     /*
      * Attribute idents can also take doc comments.  They're ignored here;
      * should they be?

xpcom/typelib/xpidl/xpidl_util.c

@@ -260,6 +260,13 @@ verify_attribute_declaration(IDL_tree attr_tree)
                        "types must be marked [noscript]\n");
         return FALSE;
     }
+
+    if (IDL_LIST(IDL_ATTR_DCL(attr_tree).simple_declarations).next != NULL)
+    {
+        IDL_tree_error(attr_tree,
+            "multiple attributes in a single declaration is not supported\n");
+        return FALSE;
+    }
     return TRUE;
 }