This is something that was copy-pasted across the IPC_HLE code
(because it's often used). Since all of the duplicated pieces of code
do the same thing as the previous EnqueueReply, except that they also
write to command_address + 0 and + 8 (to write the correct reply type),
this commit changes EnqueueReply to do that instead of having it
duplicated all over IPC HLE.