[CMake] Fix broken NetBSD bots
[CMake] Fix broken NetBSD bots

http://lab.llvm.org:8011/builders/lldb-amd64-ninja-netbsd7/builds/4558/steps/cmake%20local/logs/stdio

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@293687 91177308-0d34-0410-b5e6-96231b3b80d8

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