Remove duplicated constant `IREP_TT_SFLAG`;
@@ -25,7 +25,6 @@ enum irep_pool_type {
#define IREP_TT_NFLAG 1 /* number (non string) flag */
#define IREP_TT_SFLAG 2 /* static string flag */
-#define IREP_TT_SFLAG 2 /* static string flag */
typedef struct mrb_pool_value {
uint32_t tt; /* packed type and length (for string) */
