From d633e8afc1c36aafc8a692d9661f97832235e301 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Thu, 25 May 2017 10:41:06 +0300
Subject: [PATCH] Fixed sector iteration with Floor_Stop and Ceiling_Stop
 action specials

https://forum.zdoom.org/viewtopic.php?t=56582
---
 src/p_ceiling.cpp | 3 ++-
 src/p_floor.cpp   | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/p_ceiling.cpp b/src/p_ceiling.cpp
index fcd2a54876..fb324b54a3 100644
--- a/src/p_ceiling.cpp
+++ b/src/p_ceiling.cpp
@@ -593,8 +593,9 @@ bool EV_CeilingCrushStop (int tag, bool remove)
 
 bool EV_StopCeiling(int tag, line_t *line)
 {
+	int sec;
 	FSectorTagIterator it(tag, line);
-	while (int sec = it.Next())
+	while ((sec = it.Next()) >= 0)
 	{
 		if (level.sectors[sec].ceilingdata)
 		{
diff --git a/src/p_floor.cpp b/src/p_floor.cpp
index 63ebdc4af6..d0b6cb0773 100644
--- a/src/p_floor.cpp
+++ b/src/p_floor.cpp
@@ -570,8 +570,9 @@ bool EV_FloorCrushStop (int tag, line_t *line)
 // same as above but stops any floor mover that was active on the given sector.
 bool EV_StopFloor(int tag, line_t *line)
 {
+	int sec;
 	FSectorTagIterator it(tag, line);
-	while (int sec = it.Next())
+	while ((sec = it.Next()) >= 0)
 	{
 		if (level.sectors[sec].floordata)
 		{