Fix Blake2b in generic mode

OpenCL/inc_common.cl

@@ -2300,6 +2300,8 @@ DECLSPEC int hc_enc_next_global (hc_enc_t *hc_enc, GLOBAL_AS const u32 *src_buf,
 
       if ((dst_pos + 2) == dst_sz)
       {
+        // this section seems to break intel opencl runtime but is unknown why
+
         dst_ptr[dst_pos++] = (a >> 0) & 0xff;
         dst_ptr[dst_pos++] = (a >> 8) & 0xff;
 

OpenCL/inc_hash_blake2b.cl

@@ -113,7 +113,7 @@ DECLSPEC u64 blake2b_rot24_S (const u64 a)
 
   #else
 
-  return hc_rotr64_S (a, 16);
+  return hc_rotr64_S (a, 24);
 
   #endif
 }