From 9c8e813642847b1d0d727a3ec8613f05ae6473b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E3=82=BB=E3=83=AA=E3=82=AB=E3=83=BB=E3=82=B7=E3=83=AB?=
 =?UTF-8?q?=E3=83=95=E3=82=A3=E3=83=AB?=
 <64072399+natsumerinchan@users.noreply.github.com>
Date: Thu, 13 Apr 2023 22:15:17 +0800
Subject: [PATCH] Kernel: Fix "bash: line 21: $1: unbound variable" (#385)

---
 kernel/setup.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/setup.sh b/kernel/setup.sh
index 108d2104..856d1cd6 100755
--- a/kernel/setup.sh
+++ b/kernel/setup.sh
@@ -18,7 +18,7 @@ fi
 test -d "$GKI_ROOT/KernelSU" || git clone https://github.com/tiann/KernelSU
 cd "$GKI_ROOT/KernelSU"
 git stash && git pull
-if [ ! "$1" ]; then
+if [ -z "${1-}" ]; then
     git checkout "$(git describe --abbrev=0 --tags)"
 else
     git checkout "$1"