package/qt5multimedia: fix build with gstreamer 0.10

Fixes:
 - http://autobuild.buildroot.org/results/de26fd4f5ab130bd87ea9d7709d9568290362758

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Reviewed-by: Peter Seiderer <ps.report@gmx.net>
[Arnout: patch applies to 5.12.2 version only]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/qt5/qt5multimedia/5.12.2/0001-Fix-compile-failure-with-gstreamer-0-10.patch

@@ -0,0 +1,36 @@
+From 935967a453b47ae7c8e9ad3d94eef3813eab58db Mon Sep 17 00:00:00 2001
+From: Richard Oehlinger <richard.oehlinger@adbsafegate.com>
+Date: Mon, 18 Mar 2019 10:15:13 +0100
+Subject: [PATCH] Fix compile failure with gstreamer 0.10
+
+This fixes an compile failure introduced in commit 67c4ec55.
+
+Fixes: QTBUG-74475
+Change-Id: I0dabb72f8b5cdd75336b15515381ff9d9442788f
+Reviewed-by: VaL Doroshchuk <valentyn.doroshchuk@qt.io>
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Retrieved from:
+https://github.com/qt/qtmultimedia/commit/935967a453b47ae7c8e9ad3d94eef3813eab58db]
+---
+ src/gsttools/qgstreamerplayersession.cpp | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/gsttools/qgstreamerplayersession.cpp b/src/gsttools/qgstreamerplayersession.cpp
+index f21c94c5c..9858f61c9 100644
+--- a/src/gsttools/qgstreamerplayersession.cpp
++++ b/src/gsttools/qgstreamerplayersession.cpp
+@@ -402,9 +402,14 @@ void QGstreamerPlayerSession::setPipeline(GstElement *pipeline)
+ 
+     if (m_renderer) {
+         auto it = gst_bin_iterate_sinks(GST_BIN(pipeline));
++#if GST_CHECK_VERSION(1,0,0)
+         GValue data = { 0, 0 };
+         while (gst_iterator_next (it, &data) == GST_ITERATOR_OK) {
+             auto child = static_cast<GstElement*>(g_value_get_object(&data));
++#else
++       GstElement *child = nullptr;
++       while (gst_iterator_next(it, reinterpret_cast<gpointer *>(&child)) == GST_ITERATOR_OK) {
++#endif
+             if (QLatin1String(GST_OBJECT_NAME(child)) == QLatin1String("qtvideosink")) {
+                 m_renderer->setVideoSink(child);
+                 break;