From bfeddc35014ecde01d2e3ee3e3589669e704b6f0 Mon Sep 17 00:00:00 2001
From: Kp <kp@valhallalegends.com>
Date: Sat, 9 May 2015 19:55:58 +0000
Subject: [PATCH] Test for exploding wall damaging control center

apply_damage_to_controlcen requires a valid `who`, but exploding walls
have none.

Fixes: 3eb8f4813e01f4d3c304c3300a32475293014fb1 ("Pass vcobjptr_t to apply_damage_to_controlcen")
---
 similar/main/fireball.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/similar/main/fireball.cpp b/similar/main/fireball.cpp
index 0212c12a7..a6094a128 100644
--- a/similar/main/fireball.cpp
+++ b/similar/main/fireball.cpp
@@ -214,7 +214,8 @@ static objptridx_t object_create_explosion_sub(const objptridx_t objp, const vse
 								break;
 								}
 							case OBJ_CNTRLCEN:
-								if ( obj0p->shields >= 0 ) {
+								if (parent != object_none && obj0p->shields >= 0)
+								{
 									apply_damage_to_controlcen(obj0p, damage, parent );
 								}
 								break;