Bug#731433: iteration 9396u invokes undefined behavior [-Waggressive-loop-optimizations]

[Michael Onken]

This has been fixed upstream in commit [1] and fixes DCMTK issue [2].

Michael

[1] 180d9b9
http://git.dcmtk.org/?p=dcmtk.git;a=commit;h=180d9b93f1847c99cc82ae3977fe6f8252c294c5

[2] #759, http://support.dcmtk.org/redmine/issues/759