Fix the direction of the commit/revision edge

Summary: Ref T13276. This edge is pointed the wrong way. Point it the right way.

Test Plan: Will verify production works better.

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13276

Differential Revision: https://secure.phabricator.com/D20490

src/applications/diffusion/worker/DiffusionUpdateObjectAfterCommitWorker.php

@@ -167,7 +167,7 @@ final class DiffusionUpdateObjectAfterCommitWorker
     $xactions[] = $this->newEdgeTransaction(
       $revision,
       $commit,
-      DiffusionCommitHasRevisionEdgeType::EDGECONST);
+      DifferentialRevisionHasCommitEdgeType::EDGECONST);
 
     $match_data = $this->getUpdateProperty('revisionMatchData');