prevent crash when defect .model line is given

(no model name or no model type)

src/frontend/inpcom.c

@@ -8651,7 +8651,15 @@ static struct card *pspice_compat(struct card *oldcard)
             char *cut_del = curr_line = cut_line = inp_remove_ws(copy(cut_line));
             cut_line = nexttok(cut_line); /* skip .model */
             modname = gettok(&cut_line); /* save model name */
+            if (!modname) {
+                fprintf(stderr, "Warning: No model name given for %s\n", curr_line);
+                controlled_exit(EXIT_BAD);
+            }
             modtype = gettok_noparens(&cut_line); /* save model type */
+            if (!modtype) {
+                fprintf(stderr, "Warning: No model type given for %s\n", curr_line);
+                controlled_exit(EXIT_BAD);
+            }
             if (cieq(modtype, "NMOS") || cieq(modtype, "PMOS")) {
                 char* lv = strstr(cut_line, "level=");
                 if (lv) {