Fix mkdir arguments order (microsoft#135182)

When lauching with `env POSIXLY_CORRECT=y code [...]`, VSCode creates two directories named `-m` and `700`. This is because the order of arguments, in a POSIX strict environment, matters.

Author: concatime

resources/linux/snap/electron-launch

@@ -29,6 +29,6 @@ if [ -f "$SNAP/usr/lib/$ARCH/gdk-pixbuf-2.0/gdk-pixbuf-query-loaders" ]; then
 fi
 
 # Create $XDG_RUNTIME_DIR if not exists (to be removed when https://pad.lv/1656340 is fixed)
-[ -n "$XDG_RUNTIME_DIR" ] && mkdir -p "$XDG_RUNTIME_DIR" -m 700
+[ -n "$XDG_RUNTIME_DIR" ] && mkdir -p -m 700 "$XDG_RUNTIME_DIR"
 
 exec "$@"