AVFoundation: Remove stray semicolon after condition

Change-Id: I1c9a822ee54e7c189fe8806a11334cd23cd79a31
Reviewed-by: Christian Stromme <christian.stromme@digia.com>

src/plugins/avfoundation/mediaplayer/avfmediaplayersession.mm

@@ -357,7 +357,7 @@ static void *AVFMediaPlayerSessionObserverCurrentItemObservationContext = &AVFMe
     else if (context == AVFMediaPlayerSessionObserverCurrentItemObservationContext)
     {
         AVPlayerItem *newPlayerItem = [change objectForKey:NSKeyValueChangeNewKey];
-        if (m_playerItem != newPlayerItem);
+        if (m_playerItem != newPlayerItem)
         {
             m_playerItem = newPlayerItem;