Auto merge of #8966 - GuillaumeGomez:patch-1, r=nox

Fix invalid dictionary inheritance

Needed by #8882.

cc @nox

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components/script/dom/bindings/codegen/CodegenRust.py

@@ -1011,7 +1011,8 @@ def wrapObjectTemplate(templateBody, nullValue, isDefinitelyObject, type,
         # There are no nullable dictionaries
         assert not type.nullable()
 
-        typeName = CGDictionary.makeDictionaryName(type.inner)
+        typeName = "%s::%s" % (CGDictionary.makeModuleName(type.inner),
+                               CGDictionary.makeDictionaryName(type.inner))
         declType = CGGeneric(typeName)
         template = ("match %s::new(cx, ${val}) {\n"
                     "    Ok(dictionary) => dictionary,\n"