Revert "Allow constant struct val to reallocate its fields when resolving an inferred struct field with a comptime value."
This reverts commit debcc79d56a40f77b92e243b4e344fc9385bd405.
This caused a regression when building self-hosted
01c722c21cAndrew Kelley committed on 3/5/2020, 10:19:01 PMparentf5954da