Fix MR revert check when no merged_at is present

1 files changed, 6 insertions, 6 deletions

diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 4accb08eaf9..f6d4843abc3 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -989,13 +989,13 @@ class MergeRequest < ActiveRecord::Base
     merged_at = metrics&.merged_at
     notes_association = notes_with_associations
 
-    # It is not guaranteed that Note#created_at will be strictly later than
-    # MergeRequestMetric#merged_at. Nanoseconds on MySQL may break this
-    # comparison, as will a HA environment if clocks are not *precisely*
-    # synchronized. Add a minute's leeway to compensate for both possibilities
-    cutoff = merged_at - 1.minute
-
     if merged_at
+      # It is not guaranteed that Note#created_at will be strictly later than
+      # MergeRequestMetric#merged_at. Nanoseconds on MySQL may break this
+      # comparison, as will a HA environment if clocks are not *precisely*
+      # synchronized. Add a minute's leeway to compensate for both possibilities
+      cutoff = merged_at - 1.minute
+
       notes_association = notes_association.where('created_at >= ?', cutoff)
     end