Build 151020 hotfix - compiler bug madness

• Fixed a random CTD.
• Enemy collisions did not kill an enemy getting hit by a broken drone.

Now that was something. The original build 151020 had a random CTD, the good old 0xC0000005 that never happened in debug build in this one case - however after a long and fun disassembly (so glad I always tend to look at ASM first) I figured it not only was the very same line I used throughout the Project Constraint's code for months, but it even did project the very same listing as the rest of those! Yeah, yeah, a compiler bug that messed with the offset register during the structure writes in this one and only procedure for a reason unknown. Fixed one up by forcing a through-the-stack write, no other issues so far.