Resumption timestamps are limited to 32 bits

[jacobkeeler]

Bug Report

Detected by Coverity (CIDs 277332 and 277353).

The timestamp and last_ign_off_time parameters in the resumption data storage are currently written to and read as uint32_t, which could be shorter than time_t. These parameters should be stored as int64_t to prevent narrowing conversions. See here

Reproduction Steps

1. Set clock so that the timestamp goes past the unsigned 32 bit limit (year=2200 should work)
2. Start Core
3. Connect app
4. Stop Core and check app_info.dat

Expected Behavior

timestamp should match up with system clock

Observed Behavior

timestamp does not match up with system clock due to narrowing conversion

OS & Version Information

• OS/Version: Ubuntu 20.04
• SDL Core Version: master

[ShobhitAd]

Closed via #3946