[Committed] PR fortran/82994 -- Check for a NULL pointer

[Steve Kargl]

Committed as obvious.

2018-02-07  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/82994
	* match.c (gfc_match_deallocate): Check for NULL pointer.

2018-02-07  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/82994
	* gfortran.dg/deallocate_error_3.f90: New test.
	* gfortran.dg/deallocate_error_4.f90: New test.

-- 
Steve
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