stream.rb in httpx-0.18.0

- old
+ new

@@ -7,10 +7,10 @@
       @session = session
       @connections = connections
     end
 
     def each(&block)
-      return enum_for(__method__) unless block_given?
+      return enum_for(__method__) unless block
 
       raise Error, "response already streamed" if @response
 
       @request.stream = self
 