Use port::constant for std::muneric_limtis<>::max()

utilities/write_batch_with_index/write_batch_with_index_internal.h

@@ -15,6 +15,7 @@
 #include "rocksdb/slice.h"
 #include "rocksdb/status.h"
 #include "rocksdb/utilities/write_batch_with_index.h"
+#include "port/port.h"
 
 namespace rocksdb {
 
@@ -30,7 +31,7 @@ struct WriteBatchIndexEntry {
 
   // If this flag appears in the offset, it indicates a key that is smaller
   // than any other entry for the same column family
-  static const size_t kFlagMin = UINT64_MAX;
+  static const size_t kFlagMin = port::kMaxUint64;
 
   size_t offset;           // offset of an entry in write batch's string buffer.
   uint32_t column_family;  // column family of the entry