Fix always getting a "movie was written to disk" message when stopping a movie, will now only say so if it actually was saved to disk

BizHawk.Client.Common/movie/MovieSession.cs

@@ -195,8 +195,8 @@ namespace BizHawk.Client.Common
 
 			if (Movie.IsActive)
 			{
-				Movie.Stop(saveChanges);
-				if (saveChanges)
+				var result = Movie.Stop(saveChanges);
+				if (result)
 				{
 					Output(Path.GetFileName(Movie.Filename) + " written to disk.");
 				}

BizHawk.Client.Common/movie/bk2/Bk2Movie.ModeApi.cs

@@ -55,18 +55,22 @@ namespace BizHawk.Client.Common
 			Save();
 		}
 
-		public void Stop(bool saveChanges = true)
+		public bool Stop(bool saveChanges = true)
 		{
+			bool saved = false;
 			if (saveChanges)
 			{
 				if (_mode == Moviemode.Record || (IsActive && Changes))
 				{
 					Save();
+					saved = true;
 				}
 			}
 
 			Changes = false;
 			_mode = Moviemode.Inactive;
+
+			return saved;
 		}
 
 		public void FinishedMode()

BizHawk.Client.Common/movie/bkm/BkmMovie.ModeApi.cs

@@ -77,18 +77,22 @@ namespace BizHawk.Client.Common
 			Save();
 		}
 
-		public void Stop(bool saveChanges = true)
+		public bool Stop(bool saveChanges = true)
 		{
+			bool saved = false;
 			if (saveChanges)
 			{
 				if (_mode == Moviemode.Record || _changes)
 				{
 					Save();
+					saved = true;
 				}
 			}
 
 			_changes = false;
 			_mode = Moviemode.Inactive;
+
+			return saved;
 		}
 
 		public void FinishedMode()

BizHawk.Client.Common/movie/interfaces/IMovie.cs

@@ -145,7 +145,8 @@ namespace BizHawk.Client.Common
 		/// The saveChanges flag will tell the movie to save its contents to disk
 		/// </summary>
 		/// <param name="saveChanges">if true, will save to disk</param>
-		void Stop(bool saveChanges = true);
+		/// <returns>Whether or not the movie was saved</returns>
+		bool Stop(bool saveChanges = true);
 
 		/// <summary>
 		/// Switches to record mode