Allow debugserver to detach from the target if the connection is 
unexpectedly closed.

llvm-svn: 202110
diff --git a/lldb/tools/debugserver/source/MacOSX/MachProcess.h b/lldb/tools/debugserver/source/MacOSX/MachProcess.h
index 7a52eaa..5fa5dbd 100644
--- a/lldb/tools/debugserver/source/MacOSX/MachProcess.h
+++ b/lldb/tools/debugserver/source/MacOSX/MachProcess.h
@@ -258,7 +258,7 @@
         eMachProcessFlagsAttached = (1 << 0),
         eMachProcessFlagsUsingSBS = (1 << 1)
     };
-    void                    Clear ();
+    void                    Clear (bool detaching = false);
     void                    ReplyToAllExceptions ();
     void                    PrivateResume ();