QmlJS: Fix initializer of property declaration not being visited in Bind

This lead to the semantic checker reporting incorrect errors in these
initializers.

Task-number: QTCREATORBUG-2340
Reviewed-by: Roberto Raggi

src/libs/qmljs/qmljsbind.cpp

@@ -232,7 +232,7 @@ bool Bind::visit(UiImport *ast)
 bool Bind::visit(UiPublicMember *)
 {
     // nothing to do.
-    return false;
+    return true;
 }
 
 bool Bind::visit(UiObjectDefinition *ast)