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cpu: quote remaining remote command arguments, don't syslog on missing /mnt/term/dev/cpunote file

--- a/sys/src/cmd/cpu.c

+++ b/sys/src/cmd/cpu.c

@@ -198,7 +198,7 @@

 		*s++ = '!';

 		*s = 0;

 		while(p = ARGF())

-			s = seprint(s, cmd+sizeof(cmd), " %s", p);

+			s = seprint(s, cmd+sizeof(cmd), " %q", p);

 		break;

 	case 'k':

 		keyspec = smprint("%s %s", keyspec, EARGF(usage()));

@@ -783,10 +783,8 @@

 		_exits(0);

 	case 0:

 		fd = open(rmtnotefile, OREAD);

-		if(fd < 0){

-			syslog(0, "cpu", "cpu -R: can't open %s", rmtnotefile);

+		if(fd < 0)

 			_exits(0);

-		}

 		for(;;){

 			n = read(fd, buf, sizeof(buf)-1);