The definition will use i because of the macro, so
let's use i in the declaration as well. We can't
use DECLARE_STRING_TABLE_LOOKUP_TO_STRING() because
sd-json.h is a libsystemd public header.
int sd_json_variant_unbase64(sd_json_variant *v, void **ret, size_t *ret_size);
int sd_json_variant_unhex(sd_json_variant *v, void **ret, size_t *ret_size);
-const char* sd_json_variant_type_to_string(sd_json_variant_type_t t);
+const char* sd_json_variant_type_to_string(sd_json_variant_type_t i);
sd_json_variant_type_t sd_json_variant_type_from_string(const char *s);
static __inline__ int sd_json_format_enabled(sd_json_format_flags_t flags) {