Re: tests: adjust shell syntax that breaks AIX /bin/sh

FWIW, I think AIX is compliant here.    I believe that this syntax is valid:

for x; do y; done

... and this syntax is also valid

for x
do
  y
done

... but

for x;
do
  y
done

... isn't (at least in some POSIX versions - I don't know if this changed
at any point).