Code review comment for lp://qastaging/~tkluck/simple-scan/autosaves

I tried the following:

1. Run simple-scan with test driver:
bob@alchemy:~/bzr/simple-scan$ ./src/simple-scan test
2. Scan a single page with text mode
3. Kill simple-scan with 'killall simple-scan':
Terminated
4. Run simple-scan again
bob@alchemy:~/bzr/simple-scan$ ./src/simple-scan

** (simple-scan:8023): CRITICAL **: autosave_manager_recover_book: assertion `SQLITE_OK == _tmp8_' failed

Doesn't recover the book and gives the above error.