Fix another little nit with detach and keep stopped, you have to check
both for packet success and that the response is OK.

llvm-svn: 242262
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
index b9edfad..f486216 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
@@ -2293,7 +2293,8 @@
             const int packet_len = ::snprintf(packet, sizeof(packet), "qSupportsDetachAndStayStopped:");
             assert (packet_len < (int)sizeof(packet));
             StringExtractorGDBRemote response;
-            if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success)
+            if (SendPacketAndWaitForResponse (packet, packet_len, response, false) == PacketResult::Success
+                  && response.IsOKResponse())
             {
                 m_supports_detach_stay_stopped = eLazyBoolYes;        
             }