Revert "[dsymutil] Fix use-after-free when sys::path::append grows the buffer."
Revert "[dsymutil] Fix use-after-free when sys::path::append grows the buffer."

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@359002 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit 2bf9685e96d3f4dd0d91cd33978a1f1fe82ae983)

apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm