if in Lyrics::SwitchTo() lyrics aren't taken yet, take them and continue

if one started fetching lyrics and exited from lyrics screen before
they were taken by Lyrics::Update() and then wanted to switch again,
there was no action visible, because the function just took the lyrics
and exited. for now it continues and fetches them again.

src/lyrics.cpp

@@ -111,10 +111,7 @@ void Lyrics::SwitchTo()
 			return;
 		}
 		else if (Ready)
-		{
 			Take();
-			return;
-		}
 #		endif // HAVE_PTHREAD_H
 		
 		const MPD::Song *s = Reload ? myPlaylist->NowPlayingSong() : myScreen->CurrentSong();