ssl: handle a difference in SSLError with pypy (issue5348)

The SSLError exception is a bit different with pypy (message is the first
argument, not the second) This led the certificate error handling to crash when
trying to extract the ssl error message. We now handle this different and
'test-https.t' is green again.

mercurial/sslutil.py

@@ -390,8 +390,12 b' def wrapsocket(sock, keyfile, certfile, '
         try:
             sslcontext.load_verify_locations(cafile=settings['cafile'])
         except ssl.SSLError as e:
+            if len(e.args) == 1: # pypy has different SSLError args
+                msg = e.args[0]
+            else:
+                msg = e.args[1]
             raise error.Abort(_('error loading CA file %s: %s') % (
-                              settings['cafile'], e.args[1]),
+                              settings['cafile'], msg),
                               hint=_('file is empty or malformed?'))
         caloaded = True
     elif settings['allowloaddefaultcerts']: