Use mode_t in chmod instead of unsigned int.

This resolves FTBFS on FreeBSD.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 5b5cfc1078)

krename/batchrenamer.cpp

@@ -346,7 +346,7 @@ void BatchRenamer::work( ProgressDialog* p )
         fundo->close();
 
         // Make fundo exuteable
-        if (chmod(m_undoScript.local8Bit(), (unsigned int) S_IRUSR | S_IWUSR | S_IXUSR))
+        if (chmod(m_undoScript.local8Bit(), (mode_t)(S_IRUSR | S_IWUSR | S_IXUSR)))
             p->error( i18n("Can't set executable bit on undo script.") );
         delete fundo;
     }