[PATCH] kbuild: deb-pkg: fix building with bindeb-pkg

[Bert Karwatzki <spasswolf@web.de>]

Since the introduction of "set -u" into scripts/package/mkdebian running
the mkdebian scripts fails when it is called with no arguments (which is
the case when building the kernel with 'make bindeb-pkg'). This patch
introduces an additional check so mkdebian can be run without arguments.

Fixes: 8ef052389f7f ("kbuild: package: add -e and -u options to some shell scripts")

Signed-off-by: Bert Karwatzki <spasswolf@web.de>
---
 scripts/package/mkdebian | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
index 196b14e8ad47..5eb506573a4d 100755
--- a/scripts/package/mkdebian
+++ b/scripts/package/mkdebian
@@ -135,7 +135,7 @@ else
 fi
 maintainer="${name} <${email}>"

-if [ "$1" = --need-source ]; then
+if [ $# -eq 1 ] [ "$1" = --need-source ]; then
 	gen_source
 fi

--
2.45.2