add blatent error message for my sanity during debugging;

src/p25/packet/Voice.cpp

@@ -1138,6 +1138,10 @@ void Voice::writeNet_LDU1()
         }
     }
     else {
+        if (m_p25->m_rfLastDstId != 0U) {
+            resetNet();
+            return;
+        }
         LogWarning(LOG_NET, P25_LDU1_STR ", last LDU1 LC has bad data, dstId = 0");
     }
 
@@ -1272,6 +1276,8 @@ void Voice::writeNet_LDU1()
                 (m_netLC.getPriority() & 0x07U);                                    // Priority
 
             if (!m_p25->m_trunk->writeRF_TSDU_Grant(srcId, dstId, serviceOptions, group, false, true)) {
+                LogError(LOG_NET, P25_HDU_STR " call failure, not granted, this should not happen, dstId = %u", dstId);
+
                 if (m_network != nullptr)
                     m_network->resetP25();