maintainer: ignore the +xyz in emails when matching

Mailbot is rejecting maintainers who have +str in their email.
Try to cut that part out.

Signed-off-by: Jakub Kicinski <[email protected]>

Author: kuba-moo

core/maintainers.py

@@ -25,6 +25,11 @@ def name_email_split(name_email):
                 name_email = name_email[idx + 1:-1]
             name = ''
             email = name_email
+        if '+' in email and email.find('+') < email.find('@'):
+            pidx = email.find('+')
+            didx = email.find('@')
+            email = email[:idx] + email[didx:]
+
         return name, email
 
     def __repr__(self):