bug#71624: dejagnu-1.6.3 test failure

[Gordon Steemson]

I have tried Adam Sampson's patch for Expect 5.45.4, but unfortunately it did 
not solve this problem for me.  Neither did building in a different directory 
-- whether a subdirectory of the source directory or outside it entirely, on my 
system it always fails the report-card tests with these same sorts of 
unexpectedly closed subprocess files.