[DSE] Remove malloc from EarliestEscapeInfo before removing. (#84157)
Not removing the malloc from earliest escape info leaves stale entries
in the cache.
Fixes https://github.com/llvm/llvm-project/issues/84051.
PR: https://github.com/llvm/llvm-project/pull/84157
This fixes a crash in clang (usually a bus error, but can also be
another memory error) when compiling the science/siconos port.
PR: 278174
Reported by: yuri
MFC after: 3 days
(cherry picked from commit aaabed1dea)