[dovecot/core] f987ef: fts-solr: Explicitly ask for XML responses

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: f987ef0632fc7be03e7f26dcd99695a6936c284e
      https://github.com/dovecot/core/commit/f987ef0632fc7be03e7f26dcd99695a6936c284e
  Author: Simon Frankenberger <simon at fraho.eu>
  Date:   2017-11-10 (Fri, 10 Nov 2017)

  Changed paths:
    M src/plugins/fts-solr/fts-backend-solr.c

  Log Message:
  -----------
  fts-solr: Explicitly ask for XML responses

With recent solr versions (7.0+) the default response
writer changed from XML to JSON. This commit sets the
"wt" query parameter for all requests, so that the right
response type is written.