Ignore HRESET status when we did not request

Code was monitoring StateSensorEvents for HRESET changes and acting on
them even if we did not make the request.  This change will ignore the
state change if we do not have an outstanding request.

Change-Id: Iaa61a6bc4d0ebb9e21a6e0960e771f84a6553dc6
Signed-off-by: Chris Cain <cjcain@us.ibm.com>
diff --git a/pldm.hpp b/pldm.hpp
index 1ccdfa6..945d7a1 100644
--- a/pldm.hpp
+++ b/pldm.hpp
@@ -235,6 +235,8 @@
      */
     sdeventplus::utility::Timer<sdeventplus::ClockId::Monotonic> pldmRspTimer;
 
+    std::set<uint8_t> outstandingHResets;
+
     /** @brief Callback when PLDM response has not been received within the
      * timeout period.
      */