From f9f5e458248b2fbb8cb4d7a72650e210903f2cef Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Sun, 22 Jan 2017 20:12:44 +0100
Subject: [PATCH] - memset the entire vissprite structure when drawing a
 psprite because this does not initialize all fields.

---
 src/r_things.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/r_things.cpp b/src/r_things.cpp
index b6b4a472a..730448706 100644
--- a/src/r_things.cpp
+++ b/src/r_things.cpp
@@ -1361,6 +1361,7 @@ void R_DrawPSprite(DPSprite *pspr, AActor *owner, float bobx, float boby, double
 
 	// store information in a vissprite
 	vis = &avis[vispspindex];
+	memset(vis, 0, sizeof(*vis));
 	vis->renderflags = owner->renderflags;
 	vis->floorclip = 0;
 	vis->sector = nullptr;