full_history_ts_low should be const (#10411)

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/10411

Reviewed By: jay-zhuang

Differential Revision: D38131644

Pulled By: riversand963

fbshipit-source-id: d241521dccff1ab8882ae0726ec368f84b7e8311

include/rocksdb/options.h

@@ -1865,7 +1865,7 @@ struct CompactRangeOptions {
   uint32_t max_subcompactions = 0;
   // Set user-defined timestamp low bound, the data with older timestamp than
   // low bound maybe GCed by compaction. Default: nullptr
-  Slice* full_history_ts_low = nullptr;
+  const Slice* full_history_ts_low = nullptr;
 
   // Allows cancellation of an in-progress manual compaction.
   //