staging: gasket: core: use bool type for ns_capable result

When gasket core was converted from using capable() to use ns_capable()
instead, the type of the variable holding the result should have been
converted from int to bool.
Reported-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gasket/gasket_core.c

@@ -1191,7 +1191,7 @@ static int gasket_open(struct inode *inode, struct file *filp)
 	struct gasket_cdev_info *dev_info =
 	    container_of(inode->i_cdev, struct gasket_cdev_info, cdev);
 	struct pid_namespace *pid_ns = task_active_pid_ns(current);
-	int is_root = ns_capable(pid_ns->user_ns, CAP_SYS_ADMIN);
+	bool is_root = ns_capable(pid_ns->user_ns, CAP_SYS_ADMIN);
 
 	gasket_dev = dev_info->gasket_dev_ptr;
 	driver_desc = gasket_dev->internal_desc->driver_desc;
@@ -1270,7 +1270,7 @@ static int gasket_release(struct inode *inode, struct file *file)
 	struct gasket_cdev_info *dev_info =
 		container_of(inode->i_cdev, struct gasket_cdev_info, cdev);
 	struct pid_namespace *pid_ns = task_active_pid_ns(current);
-	int is_root = ns_capable(pid_ns->user_ns, CAP_SYS_ADMIN);
+	bool is_root = ns_capable(pid_ns->user_ns, CAP_SYS_ADMIN);
 
 	gasket_dev = dev_info->gasket_dev_ptr;
 	driver_desc = gasket_dev->internal_desc->driver_desc;