Possible bug in rlm_counter (v3)

Hi, I think there is a bug at https://github.com/FreeRADIUS/freeradius-server/blob/v3.0.x/src/modules/rlm_... res cannot be an unsigned int. It should be an int because this condition -> https://github.com/FreeRADIUS/freeradius-server/blob/v3.0.x/src/modules/rlm_... can be false. Let me know if i'm wrong. Thanks, MM