Fixed valgrind error in options_util_test

Summary:
Fixed valgrind error in options_util_test by deleting the
compaction_filter allocated from RandomInitCFOptions().

Test Plan: valgrind --error-exitcode=2 --leak-check=full ./options_util_test

Reviewers: anthony, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D50661

utilities/options/options_util_test.cc

@@ -80,6 +80,12 @@ TEST_F(OptionsUtilTest, SaveAndLoad) {
     ASSERT_NOK(RocksDBOptionsParser::VerifyCFOptions(
         cf_opts[i], loaded_cf_descs[i].options));
   }
+
+  for (size_t i = 0; i < kCFCount; ++i) {
+    if (cf_opts[i].compaction_filter) {
+      delete cf_opts[i].compaction_filter;
+    }
+  }
 }
 
 }  // namespace rocksdb