fix: access wild pointer

[18202781743]

iconButton's ownership is caller, it will access wild pointer
if it's released in 1ms.

[18202781743]

#0 0x00007f0038830a0e in QWidget::testAttribute (attribute=Qt::WA_WState_Visible, this=0x5645e4ec9310)
at ../../include/QtWidgets/../../src/widgets/kernel/qwidget.h:883
#1 QWidget::isVisible (this=0x5645e4ec9310) at ../../include/QtWidgets/../../src/widgets/kernel/qwidget.h:845
#2 QWidgetPrivate::update (this=, r=...) at kernel/qwidget.cpp:10879
#3 QWidget::update (this=this@entry=0x5645e4a9fff0, rect=...) at kernel/qwidget.cpp:10860
#4 0x00007f0038830b8e in QWidget::update (this=this@entry=0x5645e4a9fff0) at kernel/qwidget.cpp:10842
#5 0x00007f00388f7f53 in QAbstractButton::setIcon (this=0x5645e4a9fff0, icon=...) at widgets/qabstractbutton.cpp:586
#6 0x00007f0030363d4c in operator() (_closure=0x5645e499bd50) at ./dss-network-plugin/network_module.cpp:445
#7 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, dss::module::NetworkPlugin::itemWidget() const::<lambda()> >::call (arg=, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:146
#8 QtPrivate::Functor<dss::module::NetworkPlugin::itemWidget() const::<lambda()>, 0>::call<QtPrivate::List<>, void> (arg=,
f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:256
#9 QtPrivate::QFunctorSlotObject<dss::module::NetworkPlugin::itemWidget() const::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=, this=0x5645e499bd40, r=, a=,
ret=) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:443
#10 0x00007f003904d5b6 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f003903d785 in QObject::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f0038803222 in QApplicationPrivate::notify_helper (this=, receiver=0x5645e499c6c0, e=0x7fff5ac5c700)
at kernel/qapplication.cpp:3645
#13 0x00007f0039010978 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f0039069d41 in QTimerInfoList::activateTimers() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f003906a62c in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f0037795e0f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f0037797e97 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f00377984b0 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f003906a9ba in QEventDispatcherGlib::processEvents(QFlagsQEventLoop::ProcessEventsFlag) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f003900f30b in QEventLoop::exec(QFlagsQEventLoop::ProcessEventsFlag) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f003901776a in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00005645ddc2094e in main ()
(gdb) p data
$1 = (QWidgetData *) 0x0

[deepin-ci-robot]

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This pull-request has been approved by: 18202781743, mhduiy

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