Removed assignment to an "unused" variable that was removed in the

previous commit.  Building LINT didn't expose this bug, because the
assignment was in an ifdef that is too tangled for LINT to cover
properly.

sys/i386/isa/sound/cs4232.c

@@ -191,12 +191,10 @@ attach_cs4232(struct address_info * hw_config)
 	hw_config2.card_subtype = 0;
 	hw_config2.osp = hw_config->osp;
 
-	if (probe_mpu401(&hw_config2)) {
-	    mpu_detected = 1;
+	if (probe_mpu401(&hw_config2))
 	    attach_mpu401(&hw_config2);
-	} else {
+	else
 	    mpu_base = mpu_irq = 0;
-	}
     }
 #endif
 }