BUG_ON() Conversion in drivers/net/

this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c
index 64e2caf..fabc060 100644
--- a/drivers/net/arcnet/arcnet.c
+++ b/drivers/net/arcnet/arcnet.c
@@ -765,8 +765,7 @@
 	BUGMSG(D_DURING, "in arcnet_interrupt\n");
 	
 	lp = dev->priv;
-	if (!lp)
-		BUG();
+	BUG_ON(!lp);
 		
 	spin_lock(&lp->lock);