[PATCH] MySQL: Free the results when QSqlQuery::finished() is called

Calling mysql_stmt_free_result() frees the results of the last
executed query while keeping the prepared statement valid. This
allows one to keep around prepared QSqlQueries without the overhead
of keeping all the results in memory.

Change-Id: I4589e90857cc4e9a6f9612799bfca967a67e2ab2
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andy Shaw <andy.shaw@qt.io>
Gbp-Pq: Name mysql_free_results_when_qsqlquery_finished_is_called.patch

qtbase-opensource-src (5.12.5+dfsg-10) unstable; urgency=medium

  * Enable accessibility on Linux when org.a11y.Status IsEnabled is true.
    Thanks to Samuel Thibault (closes: #948676).
  * Backport upstream patch to fix use-after-free in GLib event dispatcher
    (closes: #953401).

[dgit import unpatched qtbase-opensource-src 5.12.5+dfsg-10]

Import qtbase-opensource-src_5.12.5+dfsg-10.debian.tar.xz

[dgit import tarball qtbase-opensource-src 5.12.5+dfsg-10 qtbase-opensource-src_5.12.5+dfsg-10.debian.tar.xz]

Import qtbase-opensource-src_5.12.5+dfsg.orig.tar.xz

[dgit import orig qtbase-opensource-src_5.12.5+dfsg.orig.tar.xz]