SERVER-18420 fix double populating of result in dropCollection

1 files changed, 4 insertions, 2 deletions

diff --git a/src/mongo/db/catalog/drop_collection.cpp b/src/mongo/db/catalog/drop_collection.cpp
index bf58462449f..3fb248ecb79 100644
--- a/src/mongo/db/catalog/drop_collection.cpp
+++ b/src/mongo/db/catalog/drop_collection.cpp
@@ -93,15 +93,17 @@ namespace {
 
             stopIndexBuilds(txn, db, collectionName);
 
-            result.append("ns", collectionName);
-            result.append("nIndexesWas", numIndexes);
             WriteUnitOfWork wunit(txn);
             Status s = db->dropCollection(txn, collectionName.ns());
 
+            result.append("ns", collectionName);
+
             if ( !s.isOK() ) {
                 return s;
             }
 
+            result.append("nIndexesWas", numIndexes);
+
             wunit.commit();
         } MONGO_WRITE_CONFLICT_RETRY_LOOP_END(txn, "drop", collectionName.ns());
         return Status::OK();