structs in C are not identified

[Colengms]

This seems like a recent regression, as it's such a simple scenario.

The following is in a C file in VS Code. Note that despite being followed by the keyword "struct", it's not colored as a type.

The Developer: Inspect Editor Tokens and Scopes command tells me the following when hovering over AAAA.

This only happens in C files. This works fine in a C++ file. This repro's with and without the Better C++ Syntax extension enabled, in VS Code 1.48.2.