QmlJS: Fix bug in context property extraction.

Skip forward declarations instead of giving up.

Change-Id: Id3a30296a7cefc4ef255d03727557dee6a37c362
Reviewed-on: http://codereview.qt-project.org/6321

Reviewed-by: Leandro T. C. Melo <leandro.melo@nokia.com>
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>

src/plugins/qmljstools/qmljsfindexportedcpptypes.cpp

@@ -659,10 +659,13 @@ static void buildContextProperties(
                     typeScope = scope; // incorrect but may be an ok fallback
                 ClassOrNamespace *binding = typeOf.context().lookupType(namedType->name(), typeScope);
                 if (binding && !binding->symbols().isEmpty()) {
-                    Class *klass = binding->symbols().first()->asClass();
-                    if (klass) {
-                        FakeMetaObject::Ptr fmo = buildFakeMetaObject(klass, fakeMetaObjects, typeOf);
-                        typeName = fmo->className();
+                    // find the best 'Class' symbol
+                    for (int i = binding->symbols().size() - 1; i >= 0; --i) {
+                        if (Class *klass = binding->symbols().at(i)->asClass()) {
+                            FakeMetaObject::Ptr fmo = buildFakeMetaObject(klass, fakeMetaObjects, typeOf);
+                            typeName = fmo->className();
+                            break;
+                        }
                     }
                 }
             }