[PATCH 2/2] scripts/make-erofs.sh: run mkdir less

[Alyssa Ross <hi@alyssa.is>]

[ is likely a shell builtin, so by checking for existence before
running mkdir, we avoid lots of mkdir spawns.

Signed-off-by: Alyssa Ross <hi@alyssa.is>
---
 scripts/make-erofs.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scripts/make-erofs.sh b/scripts/make-erofs.sh
index 551ae4a..ad04844 100755
--- a/scripts/make-erofs.sh
+++ b/scripts/make-erofs.sh
@@ -61,7 +61,9 @@ while read -r arg1; do
 	)
 
 	# shellcheck disable=SC2031 # shadowed in subshell on purpose
-	mkdir -p -- "$root/$parent"
+	if ! [ -e "$root/$parent" ]; then
+		mkdir -p -- "$root/$parent"
+	fi
 
 	cp -RT -- "$arg1" "$root/$arg2"
 done
-- 
2.51.0