Remove unused arg which causes compilation failure (#4080)

Summary:
It seems that compilation has been made stricter about unused args.
Closes https://github.com/facebook/rocksdb/pull/4080

Differential Revision: D8712049

Pulled By: sagar0

fbshipit-source-id: 984af1982638af3568aac1a167f565f4741badee

diff --git a/java/rocksjni/sst_file_manager.cc b/java/rocksjni/sst_file_manager.cc
index 4b410ba2f912b08394079eb514e5162f62d037a0..440411c39aeb07a96b1fe050e6b170e466e8b91b 100644 (file)
--- a/java/rocksjni/sst_file_manager.cc
+++ b/java/rocksjni/sst_file_manager.cc
@@ -138,7 +138,7 @@ jobject Java_org_rocksdb_SstFileManager_getTrackedFiles(JNIEnv* env,
 
   const rocksdb::HashMapJni::FnMapKV<const std::string, const uint64_t>
       fn_map_kv =
-          [env, &tracked_files](
+          [env](
               const std::pair<const std::string, const uint64_t>& pair) {
             const jstring jtracked_file_path =
                 env->NewStringUTF(pair.first.c_str());