Fixed minor bug in ARKSpilsSetGSType() error-checking that I'd introduced when adding FGMRES solver.
Fixed minor bug in ARKSpilsSetGSType() error-checking that I'd introduced when adding FGMRES solver.

liuqx315/Sundials,liuqx315/Sundials,liuqx315/Sundials,liuqx315/Sundials,liuqx315/Sundials,liuqx315/Sundials