Use argument joining instead of expansion

Suggested-by: ShellCheck
Documentation: https://www.shellcheck.net/wiki/SC2145

config/chroot_local-includes/usr/local/sbin/live-persist

@@ -2,13 +2,13 @@
 
 error ()
 {
-	echo "error: ${@}" >&2
+	echo "error: ${*}" >&2
 	exit 1
 }
 
 warning ()
 {
-	echo "warning: ${@}" >&2
+	echo "warning: ${*}" >&2
 }
 
 # import Cmdline_old()

release

@@ -28,7 +28,7 @@ fi
 ### helper functions
 
 fatal () {
-   echo "Fatal: $@" >&2
+   echo "Fatal: $*" >&2
    exit 2
 }