Whitespace fix

sql/sql_hset.h

@@ -40,7 +40,7 @@ class Hash_set
 
   Hash_set(PSI_memory_key psi_key, CHARSET_INFO *charset, ulong default_array_elements,
            size_t key_offset, size_t key_length, my_hash_get_key get_key,
-           void (*free_element)(void*),uint flags)
+           void (*free_element)(void*), uint flags)
   {
     my_hash_init(psi_key, &m_hash, charset, default_array_elements, key_offset,
                  key_length, get_key, free_element, flags);