From 92d053d85087fa2438a34282ee00d45bf125671e Mon Sep 17 00:00:00 2001
From: James Turner <zakalawe@mac.com>
Date: Fri, 8 Jan 2021 19:39:37 +0000
Subject: [PATCH] Tolerate blank lines in buildings lists

---
 simgear/scene/tgdb/SGBuildingBin.cxx | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/simgear/scene/tgdb/SGBuildingBin.cxx b/simgear/scene/tgdb/SGBuildingBin.cxx
index 0c7a8d82..5db94088 100644
--- a/simgear/scene/tgdb/SGBuildingBin.cxx
+++ b/simgear/scene/tgdb/SGBuildingBin.cxx
@@ -441,6 +441,10 @@ typedef QuadTreeBuilder<LOD*, SGBuildingBin::BuildingInstance, MakeBuildingLeaf,
       if (hash_pos != std::string::npos)
           line.resize(hash_pos);
 
+      if (line.empty()) {
+          continue; // skip blank lines
+      }
+
       // and process further
       std::stringstream in(line);