[findbugs] Null check on closing a treewalk in BranchTicketService

diff --git a/src/main/java/com/gitblit/tickets/BranchTicketService.java b/src/main/java/com/gitblit/tickets/BranchTicketService.java
index 3a634e0553dbf92a0cc30e399c1f2d8e0a99724d..284b1be19ee0eee2de705699cc051f2fb8ce31e1 100644 (file)
--- a/src/main/java/com/gitblit/tickets/BranchTicketService.java
+++ b/src/main/java/com/gitblit/tickets/BranchTicketService.java
@@ -659,7 +659,9 @@ public class BranchTicketService extends ITicketService implements RefsChangedLi
                                                ticket.number, db.getDirectory()), t);
                        } finally {
                                // release the treewalk
-                               treeWalk.release();
+                               if (treeWalk != null) {
+                                       treeWalk.release();
+                               }
                        }
                } finally {
                        db.close();