tests: Set maxDiff = None
tests: Set maxDiff = None

To get the full diff output for asserts that trigger.

Signed-off-by: Juerg Haefliger <959025bf4358c56e5f77d423544af56ce4c33875@gmail.com>

juergh/dwarf,dtroyer/dwarf,dtroyer/dwarf,juergh/dwarf