Windows compile complaint.

test/libp2p/rlpx.cpp

@@ -496,7 +496,9 @@ BOOST_AUTO_TEST_CASE(readerWriter)
 	// we should now have a bunch of ciphertext in encframes
 	BOOST_REQUIRE(encframes.size() == drains);
 	for (auto const& c: encframes)
+	{
 		BOOST_REQUIRE(c.size() == RLPXFrameWriter::MinFrameDequeLength);
+	}
 	
 	// read and assemble dequed encframes
 	vector<RLPXPacket> packets;