From bf7efb18f99991c8890add286f9b97bd8936dcb8 Mon Sep 17 00:00:00 2001
From: Giles Atkinson <“gatk555@gmail.com”>
Date: Tue, 5 Apr 2022 12:16:31 +0100
Subject: [PATCH] Fix two crashes caused by trying to plot after circuit
 parsing failed.

---
 src/spicelib/analysis/cktfndm.c   | 2 +-
 src/spicelib/devices/cktfinddev.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/spicelib/analysis/cktfndm.c b/src/spicelib/analysis/cktfndm.c
index 05bf1b415..014ece655 100644
--- a/src/spicelib/analysis/cktfndm.c
+++ b/src/spicelib/analysis/cktfndm.c
@@ -16,5 +16,5 @@ Author: 1985 Thomas L. Quarles
 GENmodel *
 CKTfndMod(CKTcircuit *ckt, IFuid modname)
 {
-    return nghash_find(ckt->MODnameHash, modname);
+    return ckt ? nghash_find(ckt->MODnameHash, modname) : NULL;
 }
diff --git a/src/spicelib/devices/cktfinddev.c b/src/spicelib/devices/cktfinddev.c
index 818b5607b..b5115b283 100644
--- a/src/spicelib/devices/cktfinddev.c
+++ b/src/spicelib/devices/cktfinddev.c
@@ -13,5 +13,5 @@ Author: 1985 Thomas L. Quarles
 GENinstance *
 CKTfndDev(CKTcircuit *ckt, IFuid name)
 {
-    return nghash_find(ckt->DEVnameHash, name);
+    return ckt ? nghash_find(ckt->DEVnameHash, name) : NULL;
 }