Small simplification

[kpym]

The following code

	if isNil(a) || isNil(b) {
		is.logf("%s != %s", is.valWithType(a), is.valWithType(b))
	} else if reflect.ValueOf(a).Type() == reflect.ValueOf(b).Type() {
		is.logf("%v != %v", a, b)
	} else {
		is.logf("%s != %s", is.valWithType(a), is.valWithType(b))
	}

can be simplified to

        if isNil(a) || isNil(b) || reflect.ValueOf(a).Type() != reflect.ValueOf(b).Type() {
		is.logf("%s != %s", is.valWithType(a), is.valWithType(b))
	} else {
		is.logf("%v != %v", a, b)
	}