[GMT/f15/master] (2 commits) ...Update to 4.5.6 Add patch to avoid triangulate segfault on no or empty input (bug 681957).

[Orion Poplawski]

Summary of changes:

  d3fbde7... Drop old patch file (*)
  952fdfa... Update to 4.5.6 Add patch to avoid triangulate segfault on  (*)

(*) This commit already existed in another branch; no separate mail sent