[PATCH] get_maintainer: Don't check if STDIN exists in a VCS repository

[Joe Perches]

If get_maintainer is not given any filename arguments on the command line,
the standard input is read for a patch.

But checking if a VCS has a file named &STDIN is not a good idea and fails.

Verify the nominal input file is not &STDIN before checking the VCS.

Fixes: 4cad35a7ca69 ("get_maintainer.pl: reduce need for command-line option 
-f")
Reported-by: Christopher Covington <c...@codeaurora.org>
Signed-off-by: Joe Perches <j...@perches.com>
---
 scripts/get_maintainer.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 122fcda..49a00d5 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -432,7 +432,7 @@ foreach my $file (@ARGV) {
            die "$P: file '${file}' not found\n";
        }
     }
-    if ($from_filename || vcs_file_exists($file)) {
+    if ($from_filename || ($file ne "&STDIN" && vcs_file_exists($file))) {
        $file =~ s/^\Q${cur_path}\E//;  #strip any absolute path
        $file =~ s/^\Q${lk_path}\E//;   #or the path to the lk tree
        push(@files, $file);
-- 
2.8.0.rc4.16.g56331f8