re PR fortran/80254 (Windows test failure: dec_io_2.f90)

2017-03-28  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/80254
	* gfortran.dg/dec_io_2.f90:  Do not run on MINGW, run
	* gfortran.dg/dec_io_2a.f90:  instead (new test).

From-SVN: r246573