use bash for gen_image.sh

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@5050 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/image/x86/gen_image.sh b/target/image/x86/gen_image.sh
index 3edce1e..95be6cc 100755 (executable)
--- a/target/image/x86/gen_image.sh
+++ b/target/image/x86/gen_image.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 # Copyright (C) 2006 OpenWrt.org
 
 [ $# == 5 ] || {