get_maintainer: quiet noisy implicit -f vcs_file_exists checking
Checking command line filenames that are outside the git tree can emit a noisy and confusing message. Quiet that message by redirecting stderr. Verify that the command was executed successfully. Fixes: 4cad35a7 ("get_maintainer.pl: reduce need for command-line option -f") Link: http://lkml.kernel.org/r/1970a1d2fecb258e384e2e4fdaacdc9ccf3e30a4.1470955439.git.joe@perches.comSigned-off-by: NJoe Perches <joe@perches.com> Reported-by: NWolfram Sang <wsa@the-dreams.de> Tested-by: NWolfram Sang <wsa@the-dreams.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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