[lldb-vscode] Use LLVM's ScopeExit to ensure we always terminate the debugger

Make sure we always terminate the debugger by using a RAII object.

Differential revision: https://reviews.llvm.org/D99702

GitOrigin-RevId: b7e2c2acb8eea471d0960f01d4c75d45156bd9ae
1 file changed