From c881dc975fbd16066fdab91aee69cb0ab67f28df Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Fri, 18 Dec 2020 22:58:57 +0100
Subject: [PATCH] Fixed a segmentation fault when hard resetting on some
 Amstrads.

---
 src/machine/m_amstrad.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/machine/m_amstrad.c b/src/machine/m_amstrad.c
index ec0bff6ec..21d1d8805 100644
--- a/src/machine/m_amstrad.c
+++ b/src/machine/m_amstrad.c
@@ -1715,8 +1715,13 @@ vid_close_200(void *priv)
 {
     amsvid_t *vid = (amsvid_t *)priv;
 
-    free(vid->cga.vram);
-    free(vid->mda.vram);
+    if (vid->cga.vram != vid->mda.vram) {
+	free(vid->cga.vram);
+	free(vid->mda.vram);
+    } else
+	free(vid->cga.vram);
+
+    vid->cga.vram = vid->mda.vram = NULL;
 
     free(vid);
 }