Fixed undo causing OOS in MP. Filters sent messanges from undo

changelog

@@ -64,6 +64,8 @@ Version 1.3.12+svn:
    * loading a content with invalid wml does not terminate the game
    * increased the precission off the mouse in the top row of the editor
      (closes bug #10219)
+   * Fixed networking code to filter sent items when doing undo bug 
+     (Need testing #10588)
    * Avoid an assertion failure triggered in the replays 
 
 Version 1.3.12:

players_changelog

@@ -36,6 +36,7 @@ Version 1.3.12+svn:
   * Miscellaneous and bug fixes
     * Replaced the 'Binary Saves' option with 'Compressed Saves' and now
       writes gzip files.
+    * Fixed undo causing OOS in multiplayer
     * Load the recall list with a start of scenario save.
 
 Version 1.3.12:

src/replay.cpp

@@ -469,7 +469,8 @@ void replay::undo()
 	std::vector<config::child_iterator> async_cmds;
 	// Remember cmds not yet synced and skip over them
 	while(cmd.first != cmd.second && (**(cmd.second-1))["undo"] == "no"
-		|| (**(cmd.second-1))["async"] == "yes")
+		|| (**(cmd.second-1))["async"] == "yes"
+		|| (**(cmd.second-1))["sent"] == "yes")
 	{
 		if ((**(cmd.second-1))["async"] == "yes")
 			async_cmds.push_back(cmd.second-1);