Merge branch 'dev' of https://github.com/alexchx/pnpcore into pr1387

src/sdk/PnP.Core/Model/SharePoint/Core/Internal/FileCollection.cs

@@ -96,8 +96,10 @@ private static async Task<File> ChunkedFileUpload(File newFile, Stream content,
 
             var buffer = new byte[chunkSizeBytes];
             int bytesRead;
-            while ((bytesRead = content.Read(buffer, 0, buffer.Length)) > 0)
+            while (true)
             {
+                bytesRead = content.Read(buffer, 0, buffer.Length);
+
                 // A chunk can be returned smaller than the bytes requested. See https://docs.microsoft.com/en-us/dotnet/api/system.io.stream.read?view=net-5.0&viewFallbackFrom=net-3.1#System_IO_Stream_Read_System_Byte___System_Int32_System_Int32_
                 // The total number of bytes read into the buffer. This can be less than the number of bytes requested if that many bytes are not currently available,
                 // or zero (0) if the end of the stream has been reached.
@@ -135,6 +137,8 @@ private static async Task<File> ChunkedFileUpload(File newFile, Stream content,
                         BinaryBody = chunk
                     };
                     await newFile.RequestAsync(api, HttpMethod.Post).ConfigureAwait(false);
+
+                    break;
                 }
                 else
                 {