mTLS access fix to some URLs.

This patch is about fixing mTLS access to URL requiring Administrator
or Opeartor privileges (e.g. /redfish/v1/AccountService).

Tested manually with cURL:
 - prepare and install CA certificate,
 - call GET to the url=/redfish/v1/AccountService,
 - verify whether got status=200 and proper body in the response.

Signed-off-by: Zbigniew Lukwinski <zbigniew.lukwinski@linux.intel.com>
Change-Id: I65109bffadf4f1d6d410cd303687b6da55fd1be0
diff --git a/http/http_connection.h b/http/http_connection.h
index 70def8a..bb3c9dd 100644
--- a/http/http_connection.h
+++ b/http/http_connection.h
@@ -395,7 +395,7 @@
                 {
                     return true;
                 }
-                sslUser.resize(lastChar - 1);
+                sslUser.resize(lastChar);
 
                 session =
                     persistent_data::SessionStore::getInstance()