bits256 fixes from upstream

src/komodo_cJSON.h

@@ -57,6 +57,12 @@ extern "C"
 {
 #endif
 
+#ifndef _BITS256
+#define _BITS256
+    union _bits256 { uint8_t bytes[32]; uint16_t ushorts[16]; uint32_t uints[8]; uint64_t ulongs[4]; uint64_t txid; };
+    typedef union _bits256 bits256;
+#endif
+
     /* Macros for creating things quickly. */
 #define cJSON_AddNullToObject(object,name)		cJSON_AddItemToObject(object, name, cJSON_CreateNull())
 #define cJSON_AddTrueToObject(object,name)		cJSON_AddItemToObject(object, name, cJSON_CreateTrue())