fix override VENDOR_ID

bin/distro_info

@@ -44,7 +44,14 @@ tolower()
 	echo "$*" | awk '{print tolower($0)}'
 }
 
-# Translate DISTRIB_ID to vendor name (like %_vendor does)
+override_distrib()
+{
+	[ -n "$1" ] || return
+	VENDOR_ID=''
+	DISTRIB_ID="$1"
+}
+
+# Translate DISTRIB_ID to vendor name (like %_vendor does), uses VENDOR_ID by default
 rpmvendor()
 {
 	[ "$DISTRIB_ID" = "ALTLinux" ] && echo "alt" && return
@@ -719,14 +726,12 @@ case $1 in
 		exit 0
 		;;
 	-p)
-		# override DISTRIB_ID
-		test -n "$2" && DISTRIB_ID="$2"
+		override_distrib "$2"
 		pkgtype
 		exit 0
 		;;
 	-g)
-		# override DISTRIB_ID
-		test -n "$2" && DISTRIB_ID="$2"
+		override_distrib "$2"
 		pkgmanager
 		exit 0
 		;;
@@ -734,14 +739,12 @@ case $1 in
 		print_pretty_name
 		;;
 	--distro-arch)
-		# override DISTRIB_ID
-		test -n "$2" && DISTRIB_ID="$2"
+		override_distrib "$2"
 		get_distro_arch
 		exit 0
 		;;
 	--debian-arch)
-		# override DISTRIB_ID
-		test -n "$2" && DISTRIB_ID="$2"
+		override_distrib "$2"
 		get_debian_arch
 		exit 0
 		;;
@@ -773,14 +776,12 @@ case $1 in
 		echo $DISTRIB_RELEASE
 		;;
 	-s)
-		# override DISTRIB_ID
-		test -n "$2" && DISTRIB_ID="$2"
+		override_distrib "$2"
 		pkgvendor
 		exit 0
 		;;
 	-n)
-		# override DISTRIB_ID
-		test -n "$2" && DISTRIB_ID="$2"
+		override_distrib "$2"
 		rpmvendor
 		exit 0
 		;;