Mares Smart: Pointer out of range

[Gilbert Forkel]

Hello,
downloading the dives of a Mares Smart divecomputer not containing any
dives (just unpacked new device and connected to computer) i get the
following errror:

ERROR: Ringbuffer pointer out of range. [in mares_iconhd.c:481
(mares_iconhd_extract_dives)]

Looks like memory locations 0x2001 and 0x3001 are empty (0xffffffff).

Maybe we can just check for this case and return SUCCESS ?

Gilbert