net-vpn/vtun: Fix bashism in shell script

Fix shell script compatibility issue in rc script (bashism).

Closes: https://bugs.gentoo.org/849446
Signed-off-by: Jan-Espen Oversand <sigsegv@radiotube.org>
Closes: #28682
Signed-off-by: Sam James <sam@gentoo.org>

net-vpn/vtun/files/vtun.rc

@@ -7,7 +7,8 @@ depend() {
 }
 
 start() {
-	IFS=$'\n'
+	IFS=$(printf '\n.'); # Set separator (IFS) to <newline><dot>
+	IFS=${IFS%.};        # Remove <dot> - The <dot> was because shells remove trailing newlines with $(..)
 	for line in `grep -v '^[[:space:]]*#' /etc/vtund-start.conf | grep -v '^[[:space:]]*$'`
 	do
 		echo $line |