Update LLDB snapshot to upstream r202189

Highlights include (upstream revs in parens):

- Improvements to the remote GDB protocol client
  (r196610, r197579, r197857, r200072, and others)

- Bug fixes for big-endian targets
  (r196808)

- Initial support for libdispatch (GCD) queues in the debuggee
  (r197190)

- Add "step-avoid-libraries" setting
  (r199943)

- IO subsystem improvements (including initial work on a curses gui)
  (r200263)

- Support hardware watchpoints on FreeBSD
  (r201706)

- Improved unwinding through hand-written assembly functions
  (r201839)

- Handle DW_TAG_unspecified_parameters for variadic functions
  (r202061)

- Fix Ctrl+C interrupting a running inferior process
  (r202086, r202154)

- Various bug fixes for memory leaks, LLDB segfaults, the C++ demangler,
  ELF core files, DWARF debug info, and others.

Sponsored by:	DARPA, AFRL

1 files changed, 1 insertions, 7 deletions

diff --git a/contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp b/contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp
index c71ca28..c699536 100644
--- a/contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp
+++ b/contrib/llvm/tools/lldb/source/Interpreter/CommandObject.cpp
@@ -261,13 +261,7 @@ CommandObject::CheckRequirements (CommandReturnObject &result)
         {
             Target *target = m_exe_ctx.GetTargetPtr();
             if (target)
-            {
-                if (m_api_locker.TryLock (target->GetAPIMutex(), NULL) == false)
-                {
-                    result.AppendError ("failed to get API lock");
-                    return false;
-                }
-            }
+                m_api_locker.Lock (target->GetAPIMutex());
         }
     }