audio: Remove conditional around sw which can not be NULL

Noticed by Steve Grubb.
Signed-off-by: Nmalc <av1474@comtv.ru>

audio/audio_template.h

@@ -485,7 +485,6 @@ SW *glue (AUD_open_, TYPE) (
         }
     }
 
-    if (sw) {
     sw->card = card;
     sw->vol = nominal_volume;
     sw->callback.fn = callback_fn;
@@ -510,7 +509,6 @@ SW *glue (AUD_open_, TYPE) (
     audio_pcm_print_info ("hw", &sw->hw->info);
     audio_pcm_print_info ("sw", &sw->info);
 #endif
-    }
 
     return sw;