Don't dispose hawkfile stream after ReadAllBytes(), fix ReadAllBytes …

…callsites to do disposal properly

src/BizHawk.Client.Common/RomLoader.cs

@@ -835,7 +835,7 @@ public bool LoadRom(string path, CoreComm nextComm, string launchLibretroCore, s
 						var ext = file.Extension;
 						var gi = Disc.IsValidExtension(ext)
 							? MakeGameFromDisc(InstantiateDiscFor(path), ext: ext, name: Path.GetFileNameWithoutExtension(file.Name))
-							: new RomGame(new(file.CanonicalFullPath)).GameInfo; // need to re-open???
+							: new RomGame(file).GameInfo;
 						Game.Name = $"{gi.Name} [{Game.Name/* core name */}]";
 					}
 				}

src/BizHawk.Client.Common/movie/import/IMovieImport.cs

@@ -95,7 +95,7 @@ private string PromptForRom(MatchesMovieHash matchesMovieHash)
 
 				using var rom = new HawkFile(result);
 				if (rom.IsArchive) rom.BindFirst();
-				var romData = (ReadOnlySpan<byte>) rom.ReadAllBytes();
+				var romData = new ReadOnlySpan<byte>(rom.ReadAllBytes());
 				int headerBytes = romData.Length % 1024; // assume that all roms have sizes divisible by 1024, and any rest is header
 				romData = romData[headerBytes..];
 				if (matchesMovieHash(romData))

src/BizHawk.Client.EmuHawk/config/FirmwareConfig.cs

@@ -478,7 +478,7 @@ private void TsmiSetCustomization_Click(object sender, EventArgs e)
 					// to always be copied to the global firmware directory
 					if (hf.IsArchive)
 					{
-						var ac = new ArchiveChooser(new HawkFile(filePath));
+						using var ac = new ArchiveChooser(hf);
 						if (!ac.ShowDialog(this).IsOk()) return;
 
 						var insideFile = hf.BindArchiveMember(ac.SelectedMemberIndex);

src/BizHawk.Client.EmuHawk/config/NES/NESGraphicsConfig.cs

@@ -97,7 +97,7 @@ private void SetPaletteImage()
 			{
 				if (PalettePath.Text.Length > 0)
 				{
-					var palette = new HawkFile(PalettePath.Text);
+					using var palette = new HawkFile(PalettePath.Text);
 
 					if (palette.Exists)
 					{

src/BizHawk.Client.EmuHawk/config/NES/QuickNesConfig.cs

@@ -87,7 +87,7 @@ private void ButtonPal_Click(object sender, EventArgs e)
 				filter: FilesystemFilterSet.Palettes,
 				initDir: _config.PathEntries.PalettesAbsolutePathFor(VSystemID.Raw.NES));
 			if (result is null) return;
-			HawkFile palette = new(result);
+			using HawkFile palette = new(result);
 
 			if (palette.Exists)
 			{

src/BizHawk.Client.EmuHawk/tools/MultiDiskBundler/MultiDiskFileSelector.cs

@@ -94,7 +94,7 @@ private void BrowseButton_Click(object sender, EventArgs e)
 					return;
 				}
 
-				using ArchiveChooser ac = new(new(hawkPath)); //TODO can we pass hf here instead of instantiating a new HawkFile?
+				using ArchiveChooser ac = new(hf);
 				if (!this.ShowDialogAsChild(ac).IsOk()
 					|| ac.SelectedMemberIndex < 0 || hf.ArchiveItems.Count <= ac.SelectedMemberIndex)
 				{