Fix AgentLobby.OpenLoginWaitDialog's signature

This slightly changed in 7.3, which ends up hooking into some
random function that's definitely not related to the login wait
dialog!

Author: redstrate

FFXIVClientStructs/FFXIV/Client/UI/Agent/AgentLobby.cs

@@ -85,7 +85,7 @@ public unsafe partial struct AgentLobby {
     [MemberFunction("E8 ?? ?? ?? ?? E9 ?? ?? ?? ?? 83 FB ?? 0F 8E ?? ?? ?? ?? 48 8D 4F")]
     public partial bool UpdateCharaSelectDisplay(sbyte index, bool a2);
 
-    [MemberFunction("E8 ?? ?? ?? ?? C6 83 ?? ?? ?? ?? ?? 66 C7 83")]
+    [MemberFunction("E8 ?? ?? ?? ?? C6 87 ?? ?? ?? ?? ?? 66 C7 87")]
     public partial void OpenLoginWaitDialog(int position);
 
     [MemberFunction("40 56 41 56 41 57 48 83 EC 40 80 B9")]