test: app-emu -- Fix typo in command line

$pid variable get chopped by editor
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/app-emu/job/job.exp

@@ -21,7 +21,7 @@ switch $current {
 			puts "FAIL: Timed out on ready"
 			exit -1
 		}
-		system ../../../criu dump -v4 -D ./dump -o dump.log -j -t $pi
+		system ../../../criu dump -v4 -D ./dump -o dump.log -j -t $pid
 		system echo "$pid" > ./dump/pid.pid
 		exit 0
 	}