Don't crash when Clear Sky scripts trying to change with_battleye param (#382)

Author: Xottab-DUTY

src/xrGame/ui/ServerList.h

@@ -38,6 +38,7 @@ class SServerFilters
     bool with_pass;
     bool without_pass;
     bool without_ff;
+    bool with_battleye{}; // don't remove, needed for Clear Sky scripts
     bool listen_servers;
 };
 

src/xrGame/ui/UIWindow_script.cpp

@@ -104,7 +104,7 @@ SCRIPT_EXPORT(SServerFilters, (),
             .def_readwrite("with_pass", &SServerFilters::with_pass)
             .def_readwrite("without_pass", &SServerFilters::without_pass)
             .def_readwrite("without_ff", &SServerFilters::without_ff)
-            .property     ("with_battleye", +[] { return false; })
+            .def_readwrite("with_battleye", &SServerFilters::with_battleye)
             .def_readwrite("listen_servers", &SServerFilters::listen_servers)
     ];
 });