make comphelper::containerToSequence a little smarter

So we don't have to specify the source and destination type as often.

Change-Id: Id9e286417a1cb246d163cbc3c536b231a4a92624
Reviewed-on: https://gerrit.libreoffice.org/30700
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Noel Grandin <noel.grandin@collabora.co.uk>

scripting/source/vbaevents/eventhelper.cxx

@@ -407,7 +407,7 @@ ScriptEventHelper::getEventListeners()
         }
     }
 
-    return comphelper::containerToSequence<OUString>(eventMethods);
+    return comphelper::containerToSequence(eventMethods);
 }
 
 Sequence< ScriptEventDescriptor >