split out LaunchResult

Author: SimonCropp

src/DiffEngine/DiffRunner.cs

@@ -118,14 +118,6 @@ static LaunchResult Launch(ResolvedDiffTool diffTool, string tempFile, string ta
                 throw new Exception(message, exception);
             }
         }
-    }
 
-    public enum LaunchResult
-    {
-        NoEmptyFileForExtension,
-        AlreadyRunningAndSupportsRefresh,
-        StartedNewInstance,
-        TooManyRunningDiffTools,
-        NoDiffToolForExtension
     }
 }

src/DiffEngine/LaunchResult.cs

@@ -0,0 +1,11 @@
+namespace DiffEngine
+{
+    public enum LaunchResult
+    {
+        NoEmptyFileForExtension,
+        AlreadyRunningAndSupportsRefresh,
+        StartedNewInstance,
+        TooManyRunningDiffTools,
+        NoDiffToolForExtension
+    }
+}