graphis/reallyslick: Fix build with Clang 6
hyperspace.cpp:387:19: error: non-constant-expression cannot be narrowed from type 'double' to 'float' in initializer list [-Wc++11-narrowing]
float diff[3] = {flarepos[0] - camPos[0], flarepos[1] - camPos[1], flarepos[2] - camPos[2]}; ^~~~~~~~~~~~~~~~~~~~~~~
- Attempt build on arm* again; the error message is the same as on amd64/i386
- Mark as LLD_UNSAFE when compiled with FREEALUT=on because of OpenAL [1]
PR: 226980 [1]