Squish: Fix usages of :OpenDocuments_Widget

Change-Id: I1dde01e3fc8fb5f696054f72c44bdc9387aad5c6
Reviewed-by: Christian Stenger <christian.stenger@digia.com>

tests/system/suite_editors/tst_modify_readonly/test.py

@@ -132,6 +132,7 @@ def testSaveChangesAndMakeWritable(modifiedFiles, readOnlyFiles):
                                   "visible='1' window=%s}" % saveDlgStr))
 
 def checkOpenDocumentsContains(itemName):
+    selectFromCombo(":Qt Creator_Core::Internal::NavComboBox", "Open Documents")
     openDocsTreeViewModel = waitForObject(":OpenDocuments_Widget").model()
     result = None
     found = False

tests/system/suite_general/tst_session_handling/test.py

@@ -129,6 +129,7 @@ def checkNavigator(expectedRows, message):
     test.compare(expectedRows, len(__iterateChildren__(navigatorModel, QModelIndex())), message)
 
 def checkOpenDocuments(expectedRows, message):
+    selectFromCombo(":Qt Creator_Core::Internal::NavComboBox", "Open Documents")
     openDocsWidget = waitForObject(":OpenDocuments_Widget")
     test.compare(openDocsWidget.model().rowCount(), expectedRows, message)