workaround for bug #511 to prevent copy model parameter M to device multiplier

src/spicelib/parser/inpgmod.c

@@ -121,8 +121,9 @@ create_model(CKTcircuit *ckt, INPmodel *modtmp, INPtables *tab)
             error = ft_sim->setModelParm(ckt, modtmp->INPmodfast, p->id, val, NULL);
             if (error)
                 return error;
-        } else if (strcmp(parm, "level") == 0) {
-            /* just grab the level number and throw away */
+        } else if ((strcmp(parm, "level") == 0) || (strcmp(parm, "m") == 0)) {
+            /* no instance parameter default for level and multiplier */
+            /* just grab the number and throw away */
             /* since we already have that info from pass1 */
             INPgetValue(ckt, &line, IF_REAL, tab);
         } else {