[NFC][lld][COFF] Rename findFile* methods
authorArthur Eubanks <aeubanks@google.com>
Tue, 6 Jun 2023 18:11:52 +0000 (11:11 -0700)
committerArthur Eubanks <aeubanks@google.com>
Tue, 6 Jun 2023 20:15:09 +0000 (13:15 -0700)
commit5f8f310a1ddff967f61ff7f7e023e6961a7e0dd7
tree665195b2b16569407ac90441253206a6da68d45e
parente387f49d133de0e43c390ea3b7020a7decd2eed3
[NFC][lld][COFF] Rename findFile* methods

findFile returns null if we've already seen the file, make that clearer.

Reviewed By: mstorsjo

Differential Revision: https://reviews.llvm.org/D152292
lld/COFF/Driver.cpp
lld/COFF/Driver.h