emulators/rpcs3: unbreak WITH_DEBUG build

ld: error: undefined symbol: id_manager::id_traits<sys_vm_t, void>::invalid

referenced by sys_vm.cpp:19 (rpcs3/Emu/Cell/lv2/sys_vm.cpp:19)

sys_vm.cpp.o:(sys_vm_t::~sys_vm_t()) in archive rpcs3/Emu/librpcs3_emu.a