[Reproducer] Add a `cont` to ModuleCXX.test
[Reproducer] Add a `cont` to ModuleCXX.test

On more than one occasion I've found this test got stuck during replay
while waiting for a packet from debugserver when the debugger was in the
process of being destroyed. For some reason it's more prevalent on the
downstream Swift fork. Adding a cont mitigates the problem while I
investigate.

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@371144 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb