Implement get_rod_charge() function
Rod charges may well be handled differently in Vanilla Angband to Angband/64 but /64 uses "get_rod_charge()" so equivalent functionality is needed in /65. This is needed to support EF_IDENTIFY_TRAP.
Rod charges may well be handled differently in Vanilla Angband to Angband/64 but /64 uses "get_rod_charge()" so equivalent functionality is needed in /65. This is needed to support EF_IDENTIFY_TRAP.