[PATCH 1/2] imagehlp: Catch invalid memory access in CheckSumMappedFile and add tests

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=49789

Your paranoid android.


=== debian9 (32 bit report) ===

imagehlp:
Unhandled exception: page fault on read access to 0x7edb1000 in 32-bit code (0x7ed94350).

Report errors:
imagehlp:integrity crashed (c0000005)

=== debian9 (32 bit French report) ===

imagehlp:
Unhandled exception: page fault on read access to 0x7edbb000 in 32-bit code (0x7ed9e350).

Report errors:
imagehlp:integrity crashed (c0000005)

=== debian9 (32 bit Japanese:Japan report) ===

imagehlp:
Unhandled exception: page fault on read access to 0x7edbb000 in 32-bit code (0x7ed9e350).

Report errors:
imagehlp:integrity crashed (c0000005)

=== debian9 (32 bit Chinese:China report) ===

imagehlp:
Unhandled exception: page fault on read access to 0x7edb1000 in 32-bit code (0x7ed94350).

Report errors:
imagehlp:integrity crashed (c0000005)

=== debian9b (32 bit WoW report) ===

imagehlp:
Unhandled exception: page fault on read access to 0x7edb1000 in 32-bit code (0xf73ed350).

Report errors:
imagehlp:integrity crashed (c0000005)