Remove extra semi colon from internal_repo_rocksdb/repo/table/sst_file_reader.cc

Summary:
`-Wextra-semi` or `-Wextra-semi-stmt`

If the code compiles, this is safe to land.

Reviewed By: palmje

Differential Revision: D57632757

fbshipit-source-id: 1dbad2a2e185381e225df8b9027033e06aeaf01b

table/sst_file_reader.cc

@@ -140,7 +140,7 @@ Status SstFileReader::VerifyNumEntries(const ReadOptions& read_options) {
   uint64_t num_read = 0;
   for (; internal_iter->Valid(); internal_iter->Next()) {
     ++num_read;
-  };
+  }
   s = internal_iter->status();
   if (!s.ok()) {
     return s;