Add flush to set_powerstat to avoid any queued data during power operations

src/rig.c

@@ -5623,6 +5623,7 @@ int HAMLIB_API rig_set_powerstat(RIG *rig, powerstat_t status)
 
     TRACE;
     retcode = rig->caps->set_powerstat(rig, status);
+    rig_flush(rig); // if anything is queued up flush it
     RETURNFUNC(retcode);
 }
 

tests/rigctl_parse.c

@@ -4612,12 +4612,15 @@ declare_proto_rig(recv_dtmf)
 declare_proto_rig(set_powerstat)
 {
     int stat;
+    int retval;
 
     ENTERFUNC;
 
     CHKSCN1ARG(sscanf(arg1, "%d", &stat));
 
-    RETURNFUNC(rig_set_powerstat(rig, (powerstat_t) stat));
+    retval = rig_set_powerstat(rig, (powerstat_t) stat);
+    fflush(fin);
+    RETURNFUNC(retval);
 }