[lldb] Return Unwinder& from Thread::GetUnwinder

The function always returns a valid object. Let the return type reflect
that, and remove some null checks.

1 files changed, 1 insertions, 3 deletions

diff --git a/lldb/source/Plugins/Process/gdb-remote/ThreadGDBRemote.cpp b/lldb/source/Plugins/Process/gdb-remote/ThreadGDBRemote.cpp
index 7615ae2..6deabf8 100644
--- a/lldb/source/Plugins/Process/gdb-remote/ThreadGDBRemote.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/ThreadGDBRemote.cpp
@@ -311,9 +311,7 @@ ThreadGDBRemote::CreateRegisterContextForFrame(StackFrame *frame) {
           read_all_registers_at_once, write_all_registers_at_once);
     }
   } else {
-    Unwind *unwinder = GetUnwinder();
-    if (unwinder != nullptr)
-      reg_ctx_sp = unwinder->CreateRegisterContextForFrame(frame);
+    reg_ctx_sp = GetUnwinder().CreateRegisterContextForFrame(frame);
   }
   return reg_ctx_sp;
 }