clean up small differences

Reference: /n/atom/patch/applied2013/fsnits20131003
Date: Thu Oct  3 16:39:44 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/fs/amd64/arch.c	Thu Oct  3 16:39:18 2013
+++ /sys/src/fs/amd64/arch.c	Thu Oct  3 16:39:19 2013
@@ -367,11 +367,13 @@
 {
 }
 
+/*
 void
 idle(void)
 {
 	hardhalt();
 }
+*/
 
 void
 launchinit(void)
--- /sys/src/fs/port/devcec.c	Thu Oct  3 16:39:20 2013
+++ /sys/src/fs/port/devcec.c	Thu Oct  3 16:39:20 2013
@@ -547,7 +547,7 @@
 		if(c->m){
 			cecprint("cec: reset with bp\n");
 			mbfree(c->m);
-			c->m = 0;
+			c->m = nil;
 		}
 		inita(c, if0, p);
 		break;
@@ -583,7 +583,7 @@
 	case Treset:
 		if(c->m)
 			mbfree(c->m);
-		c->m = 0;
+		c->m = nil;
 		c->state = Cunused;
 		break;
 	default:
--- /sys/src/fs/amd64/ioapic.c	Thu Oct  3 16:39:21 2013
+++ /sys/src/fs/amd64/ioapic.c	Thu Oct  3 16:39:22 2013
@@ -93,7 +93,7 @@
 			return a - xioapic;
 		}
 	}
-//	print("gsitoapicid: no ioapic found for gsi %d\n", gsi);
+	print("gsitoapicid: no ioapic found for gsi %d\n", gsi);
 	return -1;
 }