From 6baeef06ce06287f163d2c93e05d21ed9fd08d51 Mon Sep 17 00:00:00 2001
From: Dastgir <dastgirp@gmail.com>
Date: Sat, 25 Jan 2020 17:15:36 +0530
Subject: Added a check in getunits to not proceed if mapname is invalid.

---
 src/map/script.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/map/script.c b/src/map/script.c
index cf2a0c2d1..8a9236d34 100644
--- a/src/map/script.c
+++ b/src/map/script.c
@@ -11645,6 +11645,13 @@ static BUILDIN(getunits)
 		const char *mapname = script_getstr(st, 5);
 		int16 m = map->mapname2mapid(mapname);
 
+		if (m == -1) {
+			ShowError("script:getunits: Invalid map(%s) provided.\n", mapname);
+			script->reportdata(data);
+			st->state = END;
+			return false;
+		}
+
 		if (script_hasdata(st, 9)) {
 			int16 x1 = script_getnum(st, 6);
 			int16 y1 = script_getnum(st, 7);
-- 
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