QmlJS: Fix type lookup

Amends 8f682573a8.

Task-number: QTCREATORBUG-15684
Change-Id: I2d35e8f88612d5834519931d00049aa1a99d47c8
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

src/libs/qmljs/qmljscontext.cpp

@@ -148,8 +148,8 @@ const ObjectValue *Context::lookupType(const QmlJS::Document *doc, const QString
         objectValue = value;
         ++iter;
     }
-    auto end = qmlTypeName.cend();
-    for ( ; objectValue && iter != end; ) {
+
+    for (auto end = qmlTypeName.cend() ; objectValue && iter != end; ++iter) {
         const Value *value = objectValue->lookupMember(*iter, this);
         if (!value)
             return nullptr;