[#1449] object/delete: Fix NPE in collectChain

`head.previous` method returns (nil, nil) if object has no previous neighbor. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
nspcc-dev · May 30, 2022 · cc6209e · cc6209e
1 parent 96cdc04
commit cc6209e
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/pkg/services/object/delete/exec.go b/pkg/services/object/delete/exec.go
@@ -153,8 +153,10 @@ func (exec *execCtx) collectChain() bool {
 			exec.status = statusOK
 			exec.err = nil
 
-			withPrev = true
-			prev = *p
+			withPrev = p != nil
+			if withPrev {
+				prev = *p
+			}
 		}
 	}