tree-vect-patterns.c (vect_operation_fits_smaller_type): Initialize *op0 and *op1 to NULL_TREE first to avoid warnings.

	* tree-vect-patterns.c (vect_operation_fits_smaller_type): Initialize
	*op0 and *op1 to NULL_TREE first to avoid warnings.
	* calls.c (initialize_argument_information): Initialize base to avoid
	warnings.

From-SVN: r182590