Removes the call to the sprintf_s function from test_MD5.h in 17718981cf
and JSInterface_Main.cpp in 468d963e78.
As reported by Vladislav that function might not null-terminate strings
on untested/newer platforms, but the caller requires it here.
The sprintf_s calls in other places have the same problem.
Differential Revision: https://code.wildfiregames.com/D1591
Accepted By: Vladislav
This was SVN commit r21863.