fix WE_MALE and WE_FEMALE after revision 7a9aa7ff + fix crash with WE_BABY

fixing wedding skills not giving SP/HP when > 10% HP/SP left (reverted condition from 7a9aa7ff)
f_sd and m_sd can be undefined on line 7278 + corrected the condition to what I believe is the correct behavior on line 7283 + some optimizations