Death counter doesn't increase across levels

[rr-]

1. /play 1
2. /save 10
3. /endlevel
4. /hp 0
5. /load 10
6. /endlevel

Expected: 1 deaths, got: 0 deaths.

@aredfan can you please check which version this regression is from?

[aredfan]

@rr- It's a regression since 2.6, which is when the death counter was added.