Fix crash

The timeline was crashing if the target was undefined e.g.
the id was missing.

Change-Id: I3633481d6431f2d0a61ae770e865f3bc8a70ab37
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

1 files changed, 6 insertions, 3 deletions

diff --git a/src/imports/timeline/qquickkeyframe.cpp b/src/imports/timeline/qquickkeyframe.cpp
index 8984cba..5cf75e8 100644
--- a/src/imports/timeline/qquickkeyframe.cpp
+++ b/src/imports/timeline/qquickkeyframe.cpp
@@ -225,15 +225,18 @@ QVariant QQuickKeyframes::evaluate(qreal frame) const
 
 void QQuickKeyframes::setProperty(qreal frame)
 {
-    QQmlProperty qmlProperty(target(), property());
+    if (target()) {
+        QQmlProperty qmlProperty(target(), property());
 
-    qmlProperty.write(evaluate(frame));
+        qmlProperty.write(evaluate(frame));
+    }
 }
 
 void QQuickKeyframes::init()
 {
     Q_D(QQuickKeyframes);
-    d->originalValue = QQmlProperty::read(target(), property());
+    if (target())
+        d->originalValue = QQmlProperty::read(target(), property());
 }
 
 void QQuickKeyframes::resetDefaultValue()