From 3d85f49adb42b84a212a6b87b2f4576098634c93 Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Fri, 29 Jul 2016 00:21:12 -0600
Subject: [PATCH] light: entities: write null byte at the end of bsp->dentdata

---
 light/entities.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/light/entities.cc b/light/entities.cc
index 9c34dd44..80bb0a37 100644
--- a/light/entities.cc
+++ b/light/entities.cc
@@ -1113,13 +1113,15 @@ WriteEntitiesToString(bsp2_t *bsp)
     /* FIXME - why are we printing this here? */
     logprint("%i switchable light styles\n", static_cast<int>(lighttargetnames.size()));
 
-    bsp->entdatasize = entdata.size();
-    bsp->dentdata = (char *) malloc(bsp->entdatasize);
+    bsp->entdatasize = entdata.size() + 1; // +1 for a null byte at the end
+    bsp->dentdata = (char *) calloc(bsp->entdatasize, 1);
     if (!bsp->dentdata)
         Error("%s: allocation of %d bytes failed\n", __func__,
               bsp->entdatasize);
 
     memcpy(bsp->dentdata, entdata.data(), entdata.size());
+    
+    assert(0 == bsp->dentdata[bsp->entdatasize - 1]);
 }