Merge pull request #11654 from Mailaender/dispose-installshieldcab

Fixed a resource leak on OpenRA.Utility.exe --list-installshield-cab

OpenRA.Mods.Common/UtilityCommands/ListInstallShieldCabContentsCommand.cs

@@ -29,7 +29,9 @@ namespace OpenRA.Mods.Common.UtilityCommands
 		[Desc("DATA.HDR", "Lists the filenames contained within an Installshield CAB volume set")]
 		public void Run(ModData modData, string[] args)
 		{
-			var package = new InstallShieldCABCompression(File.OpenRead(args[1]), null);
+			using (var file = File.OpenRead(args[1]))
+			{
+				var package = new InstallShieldCABCompression(file, null);
 				foreach (var volume in package.Contents.OrderBy(kv => kv.Key))
 				{
 					Console.WriteLine("Volume: {0}", volume.Key);
@@ -38,4 +40,5 @@ namespace OpenRA.Mods.Common.UtilityCommands
 				}
 			}
 		}
+	}
 }