MP Create Game: allow Leave button to fill all available space

data/gui/window/mp_join_game.cfg

@@ -404,37 +404,20 @@
 			grow_factor = 0
 
 			[column]
+				border = "all"
+				border_size = 5
+				horizontal_grow = true
 
-				[grid]
-
-					[row]
-
-						[column]
-							border = "all"
-							border_size = 5
-
-							[button]
-								id = "ok"
-								definition = "large"
-								label = _ "I’m Ready"
-							[/button]
-						[/column]
-
-						[column]
-							border = "all"
-							border_size = 5
-
-							[button]
-								id = "cancel"
-								definition = "large"
-								label = _ "Leave"
-							[/button]
-						[/column]
-
-					[/row]
-
-				[/grid]
-
+				# This is exactly the size of two large-sized buttons (116 x 2) plus the interior
+				# border space between them (10). It keeps this column the same size as the corresponding
+				# one in MP Staging, which has the above layout (2 buttons, etc).
+				{GUI_FORCE_WIDGET_MINIMUM_SIZE 242 0 ( 
+					[button]
+						id = "cancel"
+						definition = "large"
+						label = _ "Leave"
+					[/button]
+				)}
 			[/column]
 
 		[/row]

src/gui/dialogs/multiplayer/mp_join_game.cpp

@@ -296,9 +296,6 @@ void mp_join_game::pre_show(window& window)
 	plugins_context_->set_callback("launch", [&window](const config&) { window.set_retval(window::OK); }, false);
 	plugins_context_->set_callback("quit",   [&window](const config&) { window.set_retval(window::CANCEL); }, false);
 	plugins_context_->set_callback("chat",   [&chat](const config& cfg) { chat.send_chat_message(cfg["message"], false); }, true);
-
-	// TODO: the old mp wait dialog didn't have an OK button. Evaluate if we want to add one. Hiding it for now
-	find_widget<button>(&window, "ok", false).set_visible(widget::visibility::hidden);
 }
 
 void mp_join_game::generate_side_list(window& window)