client: Fix 'unbound variable' error on missing args

Author: leonklingele

client/git-simpleserver

@@ -407,13 +407,15 @@ prepare_config() {
 }
 
 CONFIG_FILE_PATH="$HOME/.git-simpleserver/config.yaml"
+set +u
 case "$1" in
 "--config" | "-c")
 shift
 CONFIG_FILE_PATH="$1"
 shift
 ;;
 esac
+set -u
 if [ ! -f "$CONFIG_FILE_PATH" ]; then
 echo "Config file '$CONFIG_FILE_PATH' does not exist"
 exit 1