Common members from config_method_with_cred moved to parent config_method

lib/PAP/include/Method.h

@@ -93,7 +93,7 @@ namespace eap
         /// @}
 
     protected:
-        credentials_pass &m_cred;    ///< Method user credentials
+        credentials_pass &m_cred;   ///< Method user credentials
 
         enum {
             phase_unknown = -1,     ///< Unknown phase

lib/PAP/src/Method.cpp

@@ -98,7 +98,7 @@ void eap::method_pap::process_request_packet(
         append_avp(2, diameter_avp_flag_mandatory, password_utf8.data(), (unsigned int)password_utf8.size());
 
         m_phase = phase_finished;
-        m_cfg.m_last_status = config_method_with_cred::status_cred_invalid; // Blame credentials if we fail beyond this point.
+        m_cfg.m_last_status = config_method::status_cred_invalid; // Blame credentials if we fail beyond this point.
         break;
     }