Remove the remaining of such checks after d3e56f0f57 removed 21 of them
already.
2c47fbd66a initialized the pointer at construction time rather than at
random conditional events later.
Differential Revision: https://code.wildfiregames.com/D2205
Comments By: Vladislav, wraitii
Tested on: gcc 9.1.0, clang 8.0.1
This was SVN commit r22741.