Working on my first port (need some help)

[Brian]

I'm slowly working on my first port, and I ran into a problem during the build. 
 I have had to make this change:

Index: voicefile.cpp
===================================================================
--- voicefile.cpp       (revision 18363)
+++ voicefile.cpp       (working copy)
@@ -43,7 +43,8 @@
     // test if tempdir exists
     if(!QDir(QDir::tempPath()+"/rbvoice/").exists())
     {
-        QDir(QDir::tempPath()).mkdir("rbvoice");
+       QDir dir = QDir::tempPath();
+        dir.mkdir("rbvoice");
     }

Does anybody know why I would have a problem with this line:

 QDir(QDir::tempPath()).mkdir("rbvoice");

I'm hoping some of the port gurus here can help me out.  I am hoping to get as 
many of my diffs into the app's tree as possible, but I cannot explain why this 
hack was necessary. 

Thanks,

Brian