[lld] [LLD][COFF] Keep hasData true in NullChunk constructor (PR #124368)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

> However, on ARM64EC, the auxiliary IAT is placed at the end of the .rdata section and ends with a null chunk, making this problematic.

Can you elaborate on how this is problematic? Usually we do this for e.g. the `.bss` section, extending the virtual size of `.data` without having actual data in the binary for it. Can you explain what actually goes wrong in #124189 due to the raw data size covering the null chunks?

https://github.com/llvm/llvm-project/pull/124368