Snippets: Check for content change on apply

Cannot rely on the focus out event (on Mac) in the
situation where a snippet is added/edited and the
dialog is immediately confirmed.

Reviewed-by: con
Task-number: QTCREATORBUG-3464

src/plugins/texteditor/snippets/snippetssettingspage.cpp

@@ -387,6 +387,9 @@ void SnippetsSettingsPagePrivate::apply()
     if (settingsChanged())
         writeSettings();
 
+    if (currentEditor()->document()->isModified())
+        setSnippetContent();
+
     if (m_snippetsCollectionChanged) {
         SnippetsCollection::instance()->synchronize();
         m_snippetsCollectionChanged = false;