Fix VS only warning (#39614)

BrennanConroy · web-flow · commit b77071145f27 · 2022-01-19T09:33:10.000-08:00
https://github.com/dotnet/aspnetcore/blob/1ca07094ce3827229658c8abb741a9c3bc1fd9ae/.editorconfig#L233-L234 was missed in this file
diff --git a/src/Servers/Kestrel/Core/src/Internal/Http/HttpParser.cs b/src/Servers/Kestrel/Core/src/Internal/Http/HttpParser.cs
@@ -144,7 +144,7 @@ public bool ParseHeaders(TRequestHandler handler, ref SequenceReader<byte> reade
             var span = reader.UnreadSpan;
             while (span.Length > 0)
             {
-                var ch1 = (byte)0;
+                byte ch1;
                 var ch2 = (byte)0;
                 var readAhead = 0;
 

Original file line number	Diff line number	Diff line change
`@@ -144,7 +144,7 @@ public bool ParseHeaders(TRequestHandler handler, ref SequenceReader<byte> reade`
`144`	`144`	`var span = reader.UnreadSpan;`
`145`	`145`	`while (span.Length > 0)`
`146`	`146`	`{`
`147`		`- var ch1 = (byte)0;`
	`147`	`+ byte ch1;`
`148`	`148`	`var ch2 = (byte)0;`
`149`	`149`	`var readAhead = 0;`
`150`	`150`