This patch fixes:
lldb/source/Host/posix/ConnectionFileDescriptorPosix.cpp:279:15:
error: format specifies type 'unsigned long' but the argument has
type 'file_t' (aka 'int') [-Werror,-Wformat]
lldb/source/Host/posix/ConnectionFileDescriptorPosix.cpp:383:15:
error: format specifies type 'unsigned long' but the argument has
type 'file_t' (aka 'int') [-Werror,-Wformat]