[patch, fortran] Fix PR 91783

[Thomas Koenig]

Hello world,

this patch fixes a 10 regression in dependency checking. The
approach is simple - if gfc_dep_resolver is handed references
with _data, remove that.

Regression-tested. OK for trunk?

Regards

	Thomas

Do not look at _data component in gfc_dep_resolver.

2019-11-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/91783
	* dependency.c (gfc_dep_resolver): Do not look at _data
	component if present.

2019-11-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/91783
	* gfortran.dg/dependency_56.f90: New test.


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