C/C++: Fix unused set var warning with omp_clause_affinity [PR100913]

	PR c/100913
gcc/c/ChangeLog:

	* c-parser.c (c_parser_omp_clause_affinity): No need to set iterator
	var in the error case.

gcc/cp/ChangeLog:

	* parser.c (cp_parser_omp_clause_affinity): No need to set iterator
	var in the error case.
2 files changed