trans-stmt.c (gfc_trans_where_2): Avoid updating unused current execution mask...

trans-stmt.c (gfc_trans_where_2): Avoid updating unused current execution mask for empty WHERE/ELSEWHERE clauses.


	* trans-stmt.c (gfc_trans_where_2): Avoid updating unused current
	execution mask for empty WHERE/ELSEWHERE clauses.  Don't allocate
	temporary mask arrays if they won't be used.

From-SVN: r111303