mouse reset test inverted

Reference: /n/atom/patch/applied/mousereset
Date: Thu Mar 27 06:08:02 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/port/devmouse.c	Thu Mar 27 06:07:57 2014
+++ /sys/src/nix/port/devmouse.c	Thu Mar 27 06:07:58 2014
@@ -107,7 +107,7 @@
 static void
 mousereset(void)
 {
-	if(sys->monitor)
+	if(!sys->monitor)
 		return;
 
 	curs = arrow;
@@ -300,7 +300,7 @@
 				b = 16;
 			else if (b == 16)
 				b = 8;
-		sprint(buf, "m%11d %11d %11d %11lud ",
+		snprint(buf, sizeof buf, "m%11d %11d %11d %11lud ",
 			m.xy.x, m.xy.y,
 			b,
 			m.msec);