[patch, committed] Fix PR 88073

[Thomas Koenig]

Hello world,

using the combined superpowers of Captain Obvious and Lieutenant Simple,
I have committed the attached patch, which fixes a regression, as
r266251, after regression-testing. I will backport to 8 and 7 in the
next few days.

Regards

Thomas

2018-11-18 Thomas Koenig <***@gcc.gnu.org>

PR fortran/88073
* frontend-passes.c (combine_array_constructor): Do not do
anything if in a WHERE statement.

2018-11-18 Thomas Koenig <***@gcc.gnu.org>

PR fortran/88073
* gfortran.dg/where_7.f90: New test.