Infinite loop in DL Queue on "Remove source" > "All"

in the Download Queue, when right-clicking on a download and selecting "All" under the "Remove source" menu, DC++ goes into an infinite loop (the for loop in QueueFrame::handleRemoveSource).

happenned with the current revision (1003) as well as with the released DC++ 0.704.

after a bit of investigation, i found that QueueManager::removeSource which is called in the for loop doesn't remove the source(s); it returns at line 1079 of QueueManager.cpp because the given target can't be found in fileQueue.

note; selecting a user in the "Remove source" menu does remove the user fine, which shows that the function actually works fine. i can't figure out why it fails in the for loop...