Fix #1412: Output file empty - ICSharpCode.Decompiler.Console: dot not foreget to close stream at end of program.

ICSharpCode.Decompiler.Console/Program.cs

@@ -52,12 +52,13 @@ namespace ICSharpCode.Decompiler.Console
 					app.Error.WriteLine($"ERROR: Output directory '{outputOption.Value()}' does not exist.");
 					return -1;
 				}
+				TextWriter output = System.Console.Out;
+				try {
 					if (projectOption.HasValue()) {
 						DecompileAsProject(inputAssemblyFileName.Value, outputOption.Value());
 					} else if (listOption.HasValue()) {
 						var values = listOption.Values.SelectMany(v => v.Split(',', ';')).ToArray();
 						HashSet<TypeKind> kinds = TypesParser.ParseSelection(values);
-					TextWriter output = System.Console.Out;
 						if (outputOption.HasValue()) {
 							string directory = outputOption.Value();
 							string outputName = Path.GetFileNameWithoutExtension(inputAssemblyFileName.Value);
@@ -65,7 +66,6 @@ namespace ICSharpCode.Decompiler.Console
 						}
 						ListContent(inputAssemblyFileName.Value, output, kinds);
 					} else if (ilViewerOption.HasValue()) {
-					TextWriter output = System.Console.Out;
 						if (outputOption.HasValue()) {
 							string directory = outputOption.Value();
 							string outputName = Path.GetFileNameWithoutExtension(inputAssemblyFileName.Value);
@@ -73,7 +73,6 @@ namespace ICSharpCode.Decompiler.Console
 						}
 						ShowIL(inputAssemblyFileName.Value, output);
 					} else {
-					TextWriter output = System.Console.Out;
 						if (outputOption.HasValue()) {
 							string directory = outputOption.Value();
 							string outputName = Path.GetFileNameWithoutExtension(inputAssemblyFileName.Value);
@@ -81,6 +80,10 @@ namespace ICSharpCode.Decompiler.Console
 						}
 						Decompile(inputAssemblyFileName.Value, output, typeOption.Value());
 					}
+				} finally {
+					output.Close();
+				}
+				// do not use Console here!
 				return 0;
 			});
 
@@ -115,7 +118,6 @@ namespace ICSharpCode.Decompiler.Console
 
 			output.WriteLine($"// IL code: {decompiler.TypeSystem.MainModule.AssemblyName}");
 			output.WriteLine(textOutput.ToString());
-			output.Flush();
 		}
 
 		static void DecompileAsProject(string assemblyFileName, string outputDirectory)