Revert "[debugserver] Remove dead function call. NFCI."
Revert "[debugserver] Remove dead function call. NFCI."

This reverts commit r330066 as it was wrong and the call was
not dead. Thanks to Fred for pointing this out.

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@330071 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb