Remove duplicate headCloneUrl variable

Author: jcansdale

src/GitHub.InlineReviews/Services/PullRequestSessionService.cs

@@ -115,15 +115,14 @@ public async Task<string> GetPullRequestMergeBase(ILocalRepositoryModel reposito
             var key = new Tuple<string, string>(baseSha, headSha);
 
             string mergeBase;
-            if(mergeBaseCache.TryGetValue(key, out mergeBase))
+            if (mergeBaseCache.TryGetValue(key, out mergeBase))
             {
                 return mergeBase;
             }
 
             var repo = await GetRepository(repository);
             var baseUrl = pullRequest.Base.RepositoryCloneUrl;
             var headUrl = pullRequest.Head.RepositoryCloneUrl;
-            var headCloneUrl = pullRequest.Head.RepositoryCloneUrl;
             var baseRef = pullRequest.Base.Ref;
             var headRef = pullRequest.Head.Ref;
             mergeBase = await gitClient.GetPullRequestMergeBase(repo, baseUrl, headUrl, baseSha, headSha, baseRef, headRef);