making wireguard work on RHEL7/etc.

[Jason A. Donenfeld]

On Mon, Jun 26, 2017 at 09:45:14PM +0100, wireguard at wut.to wrote:
> another fix for RHEL7/etc., the version of bash included doesn't support
> 'local -n' (neither does Amazon AMI Linux either)
> 
> diff --git a/src/tools/wg-quick.bash b/src/tools/wg-quick.bash
> index 6edcd3a..afec996 100755
> --- a/src/tools/wg-quick.bash
> +++ b/src/tools/wg-quick.bash
> @@ -54,7 +54,7 @@ parse_options() {
>  }
> 
>  read_bool() {
> -       local -n out="$1"
> +       local out="$1"
>         case "$2" in
>         true) out=1 ;;
>         false) out=0 ;;
> 

Before removing `-n`, did you even read the bash man page to learn what
it did? Things are most certainly broken with this patch, and the config
option that uses this will no longer do anything. Nack.