Correct comment and log message for failed AlbumArt bitmap loading.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20150 a1c6a512-1295-4272-9138-f99709370657

apps/playback.c

@@ -1819,8 +1819,8 @@ static void audio_finish_load_track(void)
             }
             else if (tracks[track_widx].aa_hid < 0)
             {
-                /* another error, do not continue either */
-                logf("Could not add album art handle");
+                /* another error, ignore AlbumArt */
+                logf("Album art loading failed");
             }
         }
     }