Fix cppcheck warnings

rigs/icom/icom.c

@@ -732,13 +732,14 @@ int icom_cleanup(RIG *rig)
     struct icom_priv_data *priv;
     int i;
 
-    ENTERFUNC;
-
     if (!rig)
     {
         RETURNFUNC(-RIG_EINVAL);
     }
 
+    ENTERFUNC;
+
+
     priv = rig->state.priv;
 
     for (i = 0; rig->caps->spectrum_scopes[i].name != NULL; i++)