lbmk: always use lbmk_exit for exits

there were certain edge cases where TMPDIR wasn't
being cleaned. this patch will fix that.

Signed-off-by: Leah Rowe <leah@libreboot.org>

lbmk

@@ -58,10 +58,10 @@ main()
 
 	buildpath="./script/${0##*/}"
 
-	[ "${mode}" = "help" ] && usage ${0} && exit 0
+	[ "${mode}" = "help" ] && usage ${0} && lbmk_exit 0
 	[ "${mode}" = "list" ] && ./build command options "${buildpath}" && \
-	    exit 0
-	[ $# -lt 2 ] && usage ${0} && exit 1
+	    lbmk_exit 0
+	[ $# -lt 2 ] && usage ${0} && lbmk_exit 1
 
 	./checkgit || fail "Please read: https://libreboot.org/docs/build/"