sde-wrapper-discriminator: changed =$( to ="$( as ubuntu's /bin/sh doesn't assume it

lib/sde-wrapper-discriminator.in

@@ -44,7 +44,7 @@ sde_wrapper_discriminator_help() {
 
 sde_wrapper_discriminator() {
 	local combin= command="$1"; shift
-	local discriminators=$( sde_wrapper_discriminator_list $command )
+	local discriminators="$(sde_wrapper_discriminator_list $command)"
 
 	if [ "$1" != "${1%-*}" ]; then
 		# trying to cheat, no dashes alowed