caspermeijn opened a new pull request #2387:
URL: https://github.com/apache/mynewt-core/pull/2387


   The return code of succesfull log_cbmem_walk was 0, even when the loop
   ended early. In case of an early loop break, we want to return the rc of
   the walked function.
   This is needed to make `newtmgr log show --all` work, as the rc is
   passed to the client to indicate more data available.
   
   The return codes of the log_walk functions seem a bit of a mess, as they 
both indicate an error state as rc of the walk_func. To bad C doesn't support 
multiple return values.


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