The old parsing code overwrote the first comma with a '\0' and then
checked the index against the length of the buffer - which was changed by
replacing the ',' with the '\0'.
This means that since commit 78acf20848 ("Don't crash on loading tags
longer than 127 chars") Subsurface has potentially damaged / lost data in
dive files!
Added a test dive that shows the issue if opened by a Subsurface version
after the commit mentioned above but before this commit.
Reported-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
