Input: fix potential overflows in driver/input/joystick

Change all sprintfs into snprintfs to make sure we won't stomp on
data adjacent to our buffers.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joystick/warrior.c b/drivers/input/joystick/warrior.c
index 1849b17..f9c1a03 100644
--- a/drivers/input/joystick/warrior.c
+++ b/drivers/input/joystick/warrior.c
@@ -154,7 +154,7 @@
 		goto fail;
 
 	warrior->dev = input_dev;
-	sprintf(warrior->phys, "%s/input0", serio->phys);
+	snprintf(warrior->phys, sizeof(warrior->phys), "%s/input0", serio->phys);
 
 	input_dev->name = "Logitech WingMan Warrior";
 	input_dev->phys = warrior->phys;