some cleanup and freeing

src/server/message_parser.zig

@@ -206,6 +206,7 @@ pub const Message = union(MessageType) {
                 // Parse byte count
                 const byte_count = blk: {
                     var byte_count_list: std.ArrayList(u8) = try .initCapacity(alloc, 64);
+                    defer byte_count_list.deinit(alloc);
                     while (in.peekByte()) |byte| {
                         if (std.ascii.isWhitespace(byte)) {
                             try expectStreamBytes(in, "\r\n");