From 7b3942fbcfc632c4b0f14edf6d11923d3a3e158d Mon Sep 17 00:00:00 2001
From: "Charles J. Cliffe" <cj@cubicproductions.com>
Date: Tue, 15 Mar 2016 01:25:07 -0400
Subject: [PATCH] De-construct empty cache tree branches on GC

---
 src/util/GLFont.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/util/GLFont.cpp b/src/util/GLFont.cpp
index 0c7ebda..2923dad 100644
--- a/src/util/GLFont.cpp
+++ b/src/util/GLFont.cpp
@@ -707,6 +707,16 @@ void GLFont::doCacheGC() {
             GLFontStringCache *fc = (*removals_i)->second;
             stringCache[fc->vpx][fc->vpy][fc->pxHeight].erase(*removals_i);
             delete (*removals_i)->second;
+            
+            if (!stringCache[fc->vpx][fc->vpy][fc->pxHeight].size()) {
+                stringCache[fc->vpx][fc->vpy].erase(stringCache[fc->vpx][fc->vpy].find(fc->pxHeight));
+                if (!stringCache[fc->vpx][fc->vpy].size()) {
+                    stringCache[fc->vpx].erase(stringCache[fc->vpx].find(fc->vpy));
+                    if (!stringCache[fc->vpx].size()) {
+                        stringCache.erase(stringCache.find(fc->vpx));
+                    }
+                }
+            }
         }
     }
 }