Update comment after Linux->POSIX rename



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@184850 91177308-0d34-0410-b5e6-96231b3b80d8
Match printf format specifiers and arguments



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@184854 91177308-0d34-0410-b5e6-96231b3b80d8