refactoring and adding clamav scanning backend

MalwareMultiScan.Backends/Backends/Abstracts/AbstractScanBackend.cs

@@ -11,9 +11,9 @@ namespace MalwareMultiScan.Backends.Backends.Abstracts
     public abstract class AbstractScanBackend : IScanBackend
     {
         public virtual string Name => throw new NotImplementedException();
-        
+
         public virtual DateTime DatabaseLastUpdate => throw new NotImplementedException();
-        
+
         public virtual Task<string[]> ScanAsync(string path, CancellationToken cancellationToken)
         {
             throw new NotImplementedException();
@@ -23,14 +23,14 @@ namespace MalwareMultiScan.Backends.Backends.Abstracts
         {
             using var httpClient = new HttpClient();
             await using var uriStream = await httpClient.GetStreamAsync(uri);
-            
+
             return await ScanAsync(uriStream, cancellationToken);
         }
 
         public async Task<string[]> ScanAsync(IFormFile file, CancellationToken cancellationToken)
         {
             await using var fileStream = file.OpenReadStream();
-            
+
             return await ScanAsync(fileStream, cancellationToken);
         }
 
@@ -41,7 +41,9 @@ namespace MalwareMultiScan.Backends.Backends.Abstracts
             try
             {
                 await using (var tempFileStream = File.OpenWrite(tempFile))
+                {
                     await stream.CopyToAsync(tempFileStream, cancellationToken);
+                }
 
                 return await ScanAsync(tempFile, cancellationToken);
             }