[openwrt/openwrt] tools/bc: use more compatible shebang

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/21dfd7289b72fefd8d97c89a08ad7c3e0fb791af

commit 21dfd7289b72fefd8d97c89a08ad7c3e0fb791af
Author: Ilya Katsnelson <me at 0upti.me>
AuthorDate: Thu Sep 8 12:04:05 2022 +0300

    tools/bc: use more compatible shebang
    
    Update the existing patch to use a shebang that works on systems that
    don't have a /bin/bash, e.g. NixOS or GuixSD.
    
    Signed-off-by: Ilya Katsnelson <me at 0upti.me>
---
 tools/bc/patches/002-fix-libmath.patch | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bc/patches/002-fix-libmath.patch b/tools/bc/patches/002-fix-libmath.patch
index 1a8439542d..f2212f0953 100644
--- a/tools/bc/patches/002-fix-libmath.patch
+++ b/tools/bc/patches/002-fix-libmath.patch
@@ -10,7 +10,7 @@
 -w
 -q
 -EOS-EOS
-+#! /bin/bash
++#!/usr/bin/env bash
 +sed -e '1   s/^/{"/' \
 +    -e     's/$/",/' \
 +    -e '2,$ s/^/"/'  \