git-stash.sh: use the $( ... ) construct for command substitution

diff --git a/git-stash.sh b/git-stash.sh
index 4798bcf0e51b705005215e9a6339310defe16d03..af549c731779db02db29fef446014a58bc9a3996 100755 (executable)
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -13,7 +13,7 @@ USAGE="list [<options>]
 
 SUBDIRECTORY_OK=Yes
 OPTIONS_SPEC=
-START_DIR=`pwd`
+START_DIR=$(pwd)
 . git-sh-setup
 . git-sh-i18n
 require_work_tree