Fix sometimes ammo schemes not being saved after changing before an ammo scheme got deleted in session This was because the bool isDeleting is not initialized, so its initial value is unpredictable. Which means there's chance it starts with true, confusing the frontend.

[patterns]
**.h = native
**.c = native
**.cpp = native
**.lua = native
**.txt = native
**.pas = native
**.inc = native
**.hs = native