re PR fortran/53542 (Diagnostic of USE-associated variables shows original instead of renamed symbol name)

2017-08-01  Dominique d'Humieres  <dominiq@lps.ens.fr>

	PR fortran/53542
	* expr.c (gfc_check_init_expr): Use the renamed name.

	PR testsuite/53542
	* gfortran.dg/use_30.f90: New test.

From-SVN: r250762