dracut: fix fallback to default configuration file

Need to do the fallback in a list rather than a subshell, or we never
actually set $conffile.

Signed-off-by: David Dillow <dave@thedillows.org>

diff --git a/dracut b/dracut
index 7c98d04..be3c203 100755 (executable)
--- a/dracut
+++ b/dracut
@@ -62,7 +62,7 @@ while (($# > 0)); do
     shift
 done
 
-[[ -f $conffile ]] || ( [[ -f /etc/dracut.conf ]] && conffile="/etc/dracut.conf" )
+[[ -f $conffile ]] || { [[ -f /etc/dracut.conf ]] && conffile="/etc/dracut.conf" }
 [[ -f $conffile ]] && . "$conffile"
 [[ $dracutmodules_l ]] && dracutmodules=$dracutmodules_l
 [[ $omit_dracutmodules_l ]] && omit_dracutmodules=$omit_dracutmodules_l