trans-array.c (gfc_walk_elemental_function_args): Don't skip the advance to the next dummy argument when...

gcc/fortran/
	* trans-array.c (gfc_walk_elemental_function_args):
	Don't skip the advance to the next dummy argument when skipping
	absent optional args.
gcc/testsuite/
	* gfortran.dg/elemental_optional_args_7.f90: New.

From-SVN: r222913