[llvm] [BOLT][DWARF][NFC] Change how we re-size CloneUnitCtxMap (PR #75876)

[Amir Ayupov via llvm-commits]

================
@@ -272,7 +272,7 @@ void DIEBuilder::buildCompileUnits(const std::vector<DWARFUnit *> &CUs) {
   // set, even if they themselves don't have src cross cu ref. We could have
   // cases where this is not the case. In which case this container needs to be
   // big enough for all.
----------------
aaupov wrote:

Update this comment.

https://github.com/llvm/llvm-project/pull/75876