Wizards: getting rid of pointless empty line

An imagte with invalid path creates a poinless empty line.
Check first if image does exist.

Change-Id: Icaaafc26c81756a076683eff42ce6c9e72185f0b
Reviewed-by: Robert Loehning <robert.loehning@digia.com>

src/plugins/qmlprojectmanager/qmlapplicationwizard.cpp

@@ -79,7 +79,9 @@ void QmlApplicationWizard::createInstances(ExtensionSystem::IPlugin *plugin)
         BaseFileWizardParameters parameters;
         parameters.setDisplayName(templateInfo.displayName);
         parameters.setDescription(templateInfo.description);
-        parameters.setDescriptionImage(templateInfo.templatePath + QLatin1String("/template.png"));
+        const QString imagePath = templateInfo.templatePath + QLatin1String("/template.png");
+        if (QFileInfo(imagePath).exists())
+            parameters.setDescriptionImage(imagePath);
         parameters.setCategory(
                     QLatin1String(ProjectExplorer::Constants::QT_APPLICATION_WIZARD_CATEGORY));
         parameters.setDisplayCategory(