Calculate size of sockaddr_un manually for abstract sockets:  - SUN_LEN doesn't work because strlen(sun_path) == 0  - sizeof(sockaddr_un) doesn't work on Android.
Calculate size of sockaddr_un manually for abstract sockets:
 - SUN_LEN doesn't work because strlen(sun_path) == 0
 - sizeof(sockaddr_un) doesn't work on Android.



git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@251825 91177308-0d34-0410-b5e6-96231b3b80d8

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