sh-setup: don't let eval output to be shell-expanded.

The previous patch missed the same construct in git-clone.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>

git-clone.sh

@@ -36,7 +36,7 @@ usage() {
 	exec "$0" -h
 }
 
-eval `echo "$OPTIONS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?`
+eval "$(echo "$OPTIONS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?)"
 
 get_repo_base() {
 	(