2c629eb508
Fixes 2 error messages from the module test clang-tidy plugin. - an issue where an empty filename can't be used in an AST matcher - an issue where no filename is valid when testing the std module cppm This reduces the output of the test, making it easier to find the real error when the test fails. Reviewed By: philnik, #libc Differential Revision: https://reviews.llvm.org/D157741