inp.c, inp2q.c improve error message

when we exit() in batch mode due to a missing model definition

src/frontend/inp.c

@@ -927,8 +927,10 @@ inp_dodeck(
     }   /* for (dd = deck; dd; dd = dd->li_next) */
 
     /* Stop here and exit if error occurred in batch mode */
-    if (have_err && ft_batchmode)
+    if (have_err && ft_batchmode) {
+        fprintf(stderr, "\nngspice stopped due to error, no simulation run!\n");
         controlled_exit(EXIT_BAD);
+    }
 
     /* Only print out netlist if brief is FALSE */
     if (!cp_getvar("brief", CP_BOOL, NULL)) {

src/spicelib/parser/inp2q.c

@@ -156,7 +156,7 @@ void INP2Q(CKTcircuit *ckt, INPtables * tab, card * current, CKTnode *gnode)
             IFnewUid(ckt, &uid, NULL, "Q", UID_MODEL, NULL);
             IFC(newModel, (ckt, type, &(tab->defQmod), uid));
             err = TMALLOC(char, 70 + strlen(model));
-            (void) sprintf(err, "Unable to find definition of model %s - default BJT assumed \n", model);
+            (void) sprintf(err, "Unable to find definition of model %s\n", model);
             LITERR(err);
             tfree(err);
         }