syzbot request to add his reported-by when fix the bug find by syzbot.
However, it will trigger a error when use checkpatch:

  ERROR: Unrecognized email address: 
'[email protected]'

For it include '+' in email and make regular expression works abnomal. Fix
it by adding check for syzbot.

Signed-off-by: Yisheng Xie <[email protected]>
---
 scripts/checkpatch.pl | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 3d40403..19f3e26 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1075,7 +1075,11 @@ sub parse_email {
        } elsif ($formatted_email =~ /(\S+\@\S+)(.*)$/) {
                $address = $1;
                $comment = $2 if defined $2;
-               $formatted_email =~ s/$address.*$//;
+               if ($address =~ /^syzbot.*\@syzkaller\.appspotmail\.com$/) {
+                       $formatted_email = "";
+               } else {
+                       $formatted_email =~ s/^($address).*$//;
+               }
                $name = $formatted_email;
                $name = trim($name);
                $name =~ s/^\"|\"$//g;
-- 
1.7.12.4

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