spring-launcher lib leaking sockets when run without launcher

[p2004a]

When running Chobby with libs/spring-launcher/api_spring_launcher_loader.lua loaded (like BYAR-Chobby), but without the spring-lobby actually running e.g manual run:

./spring -isolation -write-dir ~/Documents/Beyond\ All\ Reason -menu rapid://byar-chobby:test

The library is not cleaning up sockets after connection fails, this causes reaching high number of open descriptors, and game can crash with:

[t=00:00:15.766676][f=-000001] [LuaMenu] Error: In Update(): [string "libs/spring-launcher/luaui/widgets/api_spri..."]:93: attempt to index upvalue 'client' (a nil value)
[t=00:00:15.766724][f=-000001] [LuaMenu] Error: Removed widget: <spring-launcher>
[t=00:00:15.807952][f=-000001] [CrashHandler] Error: Segmentation fault in Spring 105.1.1-1214-gcf8d087 BAR105
[t=00:00:15.807995][f=-000001] [CrashHandler] Error: Halted Stacktrace for Spring 105.1.1-1214-gcf8d087 BAR105 (SIGSEGV) using libunwind:
[t=00:00:15.857624][f=-000001] [CrashHandler] Warning: [TranslateStackTrace] addr2line not found!

Workaround is to increase the limit on file descriptors with ulimit -Sn 50000 but it's still annoying.

@Beherith not sure if belongs here or in BYAR-Chobby repo.

[Beherith]

Entirely depends on wether byarchobby overrides libs/spring-launcher/api_spring_launcher_loader.lua :) if yes, then well have to fix it our side :) though the filename doesnt indicate an area of chobby im familiar with