Fixed the asan error on column_family_test

Summary:
Fixed the asan error on column_family_test caused by not disabling
SyncPoint.

Test Plan: column_family_test

Reviewers: anthony, rven, kradhakrishnan, sdong, IslamAbdelRahman

Reviewed By: IslamAbdelRahman

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D53505

db/column_family_test.cc

@@ -65,6 +65,7 @@ class ColumnFamilyTest : public testing::Test {
 
   ~ColumnFamilyTest() {
     Close();
+    rocksdb::SyncPoint::GetInstance()->DisableProcessing();
     Destroy();
     delete env_;
   }
@@ -2047,7 +2048,6 @@ TEST_F(ColumnFamilyTest, FlushAndDropRaceCondition) {
 
   Close();
   Destroy();
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
 }
 
 #ifndef ROCKSDB_LITE
@@ -2125,7 +2125,6 @@ TEST_F(ColumnFamilyTest, CreateAndDropRace) {
   drop_cf_thread.join();
   Close();
   Destroy();
-  rocksdb::SyncPoint::GetInstance()->DisableProcessing();
   for (auto* comparator : comparators) {
     if (comparator) {
       delete comparator;