various: remove double new line at the end of file

audio/out/ao_coreaudio_properties.c

@@ -101,4 +101,3 @@ Boolean ca_settable(AudioObjectID id, ca_scope scope, ca_sel selector,
 
     return AudioObjectIsPropertySettable(id, &p_addr, data);
 }
-

player/configfiles.c

@@ -472,4 +472,3 @@ struct playlist_entry *mp_check_playlist_resume(struct MPContext *mpctx,
     }
     return NULL;
 }
-

video/out/placebo/ra_pl.c

@@ -674,4 +674,3 @@ static struct ra_fns ra_fns_pl = {
     .timer_start            = timer_start_pl,
     .timer_stop             = timer_stop_pl,
 };
-