Fixing Window.MaybeUpdateData not to return true every time when Repo is null

Author: StanleyGoldman

src/UnityExtension/Assets/Editor/GitHub.Unity/UI/Window.cs

@@ -211,15 +211,19 @@ private bool MaybeUpdateData(out string repoRemote)
             }
             else if (!HasRepository)
             {
-                repoBranch = null;
-                repoUrl = null;
-            }
+                if (repoBranch != null)
+                {
+                    repoBranch = null;
+                    repoDataChanged = true;
+                }
 
-            if (repoUrl == null)
-            {
-                repoUrl = DefaultRepoUrl;
-                repoDataChanged = true;
+                if (repoUrl != DefaultRepoUrl)
+                {
+                    repoUrl = DefaultRepoUrl;
+                    repoDataChanged = true;
+                }
             }
+
             return repoDataChanged;
         }