GCC 4.7 fix.

This partially resolves bug report 958.
Thanks to David C. Rankin.
(cherry picked from commit a209c81b78)

digikam/digikam/albummanager.cpp

@@ -1579,16 +1579,16 @@ void AlbumManager::slotDatesJobData(KIO::Job*, const TQByteArray& data)
 
         // Check if Year Album already exist.
         DAlbum *yAlbum = 0;
-        AlbumIterator it(d->rootDAlbum);
-        while (it.current())
+        AlbumIterator it2(d->rootDAlbum);
+        while (it2.current())
         {
-            DAlbum* a = (DAlbum*)(*it);
+            DAlbum* a = (DAlbum*)(*it2);
             if (a->date() == TQDate(year, 1, 1) && a->range() == DAlbum::Year)
             {
                 yAlbum = a;
                 break;
             }
-            ++it;
+            ++it2;
         }
 
         // If no, create Year album.