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>

drivers/net/arcnet/arcnet.c

@@ -765,8 +765,7 @@ irqreturn_t arcnet_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 	BUGMSG(D_DURING, "in arcnet_interrupt\n");
 	
 	lp = dev->priv;
-	if (!lp)
-		BUG();
+	BUG_ON(!lp);
 		
 	spin_lock(&lp->lock);