From 9bac911fe1929228af883b6d5a948bbfdcc05835 Mon Sep 17 00:00:00 2001
From: Scott Giese <scttgs0@gmail.com>
Date: Thu, 17 Dec 2020 16:08:06 -0600
Subject: [PATCH] Maintenance: Use empty instead of size==0

---
 simgear/scene/tgdb/ReaderWriterSTG.cxx   | 2 +-
 simgear/scene/util/OrthophotoManager.cxx | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/simgear/scene/tgdb/ReaderWriterSTG.cxx b/simgear/scene/tgdb/ReaderWriterSTG.cxx
index 273a3232..36816ed3 100644
--- a/simgear/scene/tgdb/ReaderWriterSTG.cxx
+++ b/simgear/scene/tgdb/ReaderWriterSTG.cxx
@@ -699,7 +699,7 @@ struct ReaderWriterSTG::_ModelBin {
             i->_elev += elevation(*terrainGroup, SGGeod::fromDeg(i->_lon, i->_lat));
         }
 
-        if (_objectStaticList.empty() && _signList.empty() && (_buildingListList.size() == 0) && (_treeListList.size() == 0)) {
+        if (_objectStaticList.empty() && _signList.empty() && _buildingListList.empty() && _treeListList.empty()) {
             // The simple case, just return the terrain group
             return terrainGroup.release();
         } else {
diff --git a/simgear/scene/util/OrthophotoManager.cxx b/simgear/scene/util/OrthophotoManager.cxx
index 51db95db..65ad02d3 100644
--- a/simgear/scene/util/OrthophotoManager.cxx
+++ b/simgear/scene/util/OrthophotoManager.cxx
@@ -350,7 +350,7 @@ namespace simgear {
             }
         }
 
-        if (orthophotos.size() == 0) {
+        if (orthophotos.empty()) {
             return nullptr;
         } else if (orthophotos.size() == 1) {
             return orthophotos[0];