staging/line6: Fix kzalloc coding style issue

Pass the actual variable to sizeof instead of a type definition.

Signed-off-by: L. Alberto Giménez <agimenez@sysvalve.es>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/line6/pcm.c b/drivers/staging/line6/pcm.c
index 661080b..a3136b1 100644
--- a/drivers/staging/line6/pcm.c
+++ b/drivers/staging/line6/pcm.c
@@ -475,7 +475,7 @@
 		MISSING_CASE;
 	}
 
-	line6pcm = kzalloc(sizeof(struct snd_line6_pcm), GFP_KERNEL);
+	line6pcm = kzalloc(sizeof(*line6pcm), GFP_KERNEL);
 
 	if (line6pcm == NULL)
 		return -ENOMEM;