corrected WaitForChild comment about who sets endProcData->pid to 0

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50793 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/unix/utilsunx.cpp

@@ -1392,8 +1392,8 @@ int wxGUIAppTraits::WaitForChild(wxExecuteData& execData)
         }
         else // !wxEXEC_NOEVENTS
         {
-            // endProcData->pid will be set to 0 from GTK_EndProcessDetector when the
-            // process terminates
+            // endProcData->pid will be set to 0 from
+            // wxHandleProcessTermination when the process terminates
             while ( endProcData->pid != 0 )
             {
                 bool idle = true;