Cleanup, no functional change

[flightgear.git] / src / ATC / trafficcontrol.hxx

diff --git a/src/ATC/trafficcontrol.hxx b/src/ATC/trafficcontrol.hxx
index 1a137d4a59eaf19f2ab1087a63e33dd26ab3d068..bdedf0e1e902b57d6c45f95ac5794835512ba07c 100644 (file)
--- a/src/ATC/trafficcontrol.hxx
+++ b/src/ATC/trafficcontrol.hxx
@@ -479,7 +479,7 @@ public:
     virtual std::string getName();
     virtual void update(double dt);
     bool hasActiveTraffic() {
-        return activeTraffic.size() != 0;
+        return ! activeTraffic.empty();
     };
     TrafficVector &getActiveTraffic() {
         return activeTraffic;
@@ -516,7 +516,7 @@ public:
     virtual void update(double dt);
 
     bool hasActiveTraffic() {
-        return activeTraffic.size() != 0;
+        return ! activeTraffic.empty();
     };
     TrafficVector &getActiveTraffic() {
         return activeTraffic;
@@ -558,7 +558,7 @@ public:
     ActiveRunway* getRunway(const std::string& name);
 
     bool hasActiveTraffic() {
-        return activeTraffic.size() != 0;
+        return ! activeTraffic.empty();
     };
     TrafficVector &getActiveTraffic() {
         return activeTraffic;