Set numPackets for imported streams to 1

Earlier the default value for num_packets was 1 and the imported streams
therefore also had the same. However, when the default value got changed
to 10, the num_packets for imported streams should have been explicitly
set to 1 - this was missed out and has been fixed now

common/pcapfileformat.cpp

@@ -438,6 +438,8 @@ _non_pdml:
         stream->mutable_core()->set_is_enabled(true);
         stream->mutable_core()->set_frame_len(pktHdr.inclLen+4); // FCS
 
+        stream->mutable_control()->set_num_packets(1);
+
         // setup packet rate to the timing in pcap (as close as possible)
         const uint kUsecsInSec = uint(1e6);
         uint usec = (pktHdr.tsSec*kUsecsInSec + pktHdr.tsUsec);

common/pdmlprotocols.cpp

@@ -192,4 +192,6 @@ void PdmlFrameProtocol::unknownFieldHandler(QString name, int /*pos*/,
             }
         }
     }
+    else if (name == "frame.number")
+        stream->mutable_control()->set_num_packets(1);
 }