fixed IO redirection to work in wxExecute() in console applications (including the case when the child process outputs more than pipe buffer size) by using wxSelectDispatcher for multiplexing

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52692 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/unix/apptraits.cpp

@@ -58,11 +58,9 @@ int wxGUIAppTraits::WaitForChild(wxExecuteData& execData)
     endProcData.tag = AddProcessCallback
                       (
                          &endProcData,
-                         execData.pipeEndProcDetect.Detach(wxPipe::Read)
+                         execData.GetEndProcReadFD()
                       );
 
-    execData.pipeEndProcDetect.Close();
-
 
     // prepare to wait for the child termination: show to the user that we're
     // busy and refuse all input unless explicitly told otherwise