unifying packet and acked_packet since acked_packet was not defined a…

…nywhere.

draft-ietf-quic-recovery.md

@@ -1522,22 +1522,22 @@ newly acked_packets from sent_packets.
     for acked_packet in acked_packets:
       OnPacketAcked(acked_packet)
 
-  OnPacketAcked(packet):
+  OnPacketAcked(acked_packet):
     // Remove from bytes_in_flight.
-    bytes_in_flight -= packet.sent_bytes
+    bytes_in_flight -= acked_packet.sent_bytes
 
     // Do not increase congestion_window if application
     // limited or flow control limited.
     if (IsAppOrFlowControlLimited())
         return
 
     // Do not increase congestion window in recovery period.
-    if (InCongestionRecovery(packet.time_sent)):
+    if (InCongestionRecovery(acked_packet.time_sent)):
         return
 
     if (congestion_window < ssthresh):
         // Slow start.
-        congestion_window += packet.sent_bytes
+        congestion_window += acked_packet.sent_bytes
     else:
         // Congestion avoidance.
         congestion_window += max_datagram_size * acked_packet.sent_bytes