Catch a system error that OSX's SFML produces since it's at the end and looks like just a cleanup mistake.

main.cpp

@@ -2,41 +2,49 @@
 #include "textures.hpp"
 #include "sound.hpp"
 #include "autowalker.hpp"
+#include <iostream>
 
 int main(int argc, char* argv[]) {
-  textures::init();
-  sound::init();
-  sound::mute(false);
-  gui::FSM main;
-  main.event(gui::Event::STARTED);
-  Autowalker walker(main);
+  try {
+    textures::init();
+    sound::init();
+    sound::mute(false);
+    gui::FSM main;
+    main.event(gui::Event::STARTED);
+    Autowalker walker(main);
 
-  sound::play("ambient_1", true);
+    sound::play("ambient_1", true);
 
-  if(argc > 1 && argv[1][0] == 't') {
-    walker.start_autowalk();
-  }
+    if(argc > 1 && argv[1][0] == 't') {
+      walker.start_autowalk();
+    }
 
-  while(main.active()) {
-    main.render();
+    while(main.active()) {
+      main.render();
 
-    // ZED: need to sort out how to deal with this in the FSM
-    if(main.in_state(gui::State::IDLE)
-        || main.in_state(gui::State::NEXT_LEVEL)
-        || main.in_state(gui::State::MAPPING)
-        || main.in_state(gui::State::IN_COMBAT))
-    {
-      if(main.autowalking) {
-        walker.autowalk();
-      } else {
-        main.keyboard_mouse();
+      // ZED: need to sort out how to deal with this in the FSM
+      if(main.in_state(gui::State::IDLE)
+          || main.in_state(gui::State::NEXT_LEVEL)
+          || main.in_state(gui::State::MAPPING)
+          || main.in_state(gui::State::IN_COMBAT))
+      {
+        if(main.autowalking) {
+          walker.autowalk();
+        } else {
+          main.keyboard_mouse();
+        }
+      } else{
+        main.event(gui::Event::TICK);
       }
-    } else{
-      main.event(gui::Event::TICK);
+
+      main.handle_world_events();
     }
 
-    main.handle_world_events();
+    return 0;
+  } catch(const std::system_error& e) {
+    std::cout << "WARNING: On OSX you'll get this error on shutdown.\n";
+    std::cout << "Caught system_error with code "
+                 "[" << e.code() << "] meaning "
+                 "[" << e.what() << "]\n";
   }
-
-  return 0;
 }