It is otherwise impossible to determine which test failed sanitizer/valgrind
check. test/functional/helpers.lua module return was changed so that tests which
do not provide after_each function to get new check will automatically fail.
Problem: Using "q!" when there is a modified hidden buffer does not unload
the current buffer, resulting in the need to abandon it again.
Solution: When using "q!" unload the current buffer when needed. (Yasuhiro
Matsumoto, Hirohito Higashi)
027387f70c
