std::string_views are created pointing to vector-owned strings, but
those strings can use Short String Optimisation (storing the data
inline, i.e. in vector memory). When the vector is resized, the strings
are moved and those string_views now point to invalid memory.
To fix it, use std::deque which does not invalidate pointers on
push_back.
Fixes 5d2be02f68.
Reviewed By: vladislavbelov
Fixes#5950
Differential Revision: https://code.wildfiregames.com/D3441
This was SVN commit r24742.
wraitii
1877871be0