From: Yousong Zhou <yszhou4tech@gmail.com>
Date: Thu, 24 Nov 2016 05:50:02 +0000 (+0800)
Subject: build: find_md5: ignore non-existent files or directories
X-Git-Tag: v17.01.0-rc1~734
X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=commitdiff_plain;h=f66cb6f810e55016167086bd96310fc14c1e6362;hp=f66cb6f810e55016167086bd96310fc14c1e6362

build: find_md5: ignore non-existent files or directories

Targets like malta can have no patches/ directory available and this
commit tries quash "no such file or directory" messages from `find`

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
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