Update symbols from amd64 build logs.

debian/changelog

@@ -3,6 +3,7 @@ libqtxdg (3.5.0-0ubuntu1) UNRELEASED; urgency=medium
   * New upstream release.
     - Update upstream signing key.
     - Update LXQt build dependencies.
+    - Update symbols from amd64 build logs.
   * Bump Standards-version to 4.5.0, no changes needed.
   * debhelper -> debhelper-compat.
   * Run wrap-and-sort.

debian/libqt5xdg3.symbols

@@ -139,6 +139,7 @@ libQt5Xdg.so.3 libqt5xdg3 #MINVER#
  (c++)"XdgMimeType::iconName() const@Base" 1.0.0
  (c++)"XdgMimeType::operator=(XdgMimeType const&)@Base" 1.0.0
  (c++)"XdgMimeType::~XdgMimeType()@Base" 1.0.0
+ (c++)"XdgMimeType::swap(XdgMimeType&)@Base" 3.5.0
  (c++)"non-virtual thunk to XdgMenuWidget::~XdgMenuWidget()@Base" 1.0.0
  (c++)"typeinfo for XdgAction@Base" 1.0.0
  (c++)"typeinfo for XdgDesktopFile@Base" 1.0.0