test: Fix race in p2p_invalid_messages #15330

1. 
   MarcoFalke commented at 10:48 PM on February 2, 2019: member

   After we change our magic bytes, the node may or may not send us messages such as feefilter or sendheaders, which would be rejected by _on_data.

   Solve that by replacing _on_data with a noop.

2. test: Fix race in p2p_invalid_messages fac3a054cb
3. MarcoFalke added the label Tests on Feb 2, 2019
4. MarcoFalke added this to the milestone 0.18.0 on Feb 2, 2019
5. 
   Empact commented at 11:03 PM on February 2, 2019: member

   utACK https://github.com/bitcoin/bitcoin/pull/15330/commits/fac3a054cb76597a45e7cfe31d1067c25872c760

6. 
   jonasschnelli commented at 12:25 AM on February 3, 2019: contributor

   utACK fac3a054

7. MarcoFalke merged this on Feb 3, 2019
8. MarcoFalke closed this on Feb 3, 2019

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Milestone
0.18.0