View Linking: Guard null pointer use

[magnesj]

Check and verify pointers before use.

[0] performCrashLogging at ResInsight/ApplicationExeCode/RiaMainTools.cpp:147
[1] manageSegFailureSA(int, siginfo_t*, void*) at ResInsight/ApplicationExeCode/RiaMainTools.cpp:227
[6] RimViewLinker::addDependentView(Rim3dView*) at ResInsight/ApplicationLibCode/ProjectDataModel/RimViewLinker.cpp:623
[7] RicSetMasterViewFeature::onActionTriggered(bool) at ResInsight/ApplicationLibCode/Commands/ViewLink/RicSetMasterViewFeature.cpp:75
[17] RiaGuiApplication::notify(QObject*, QEvent*) at ResInsight/ApplicationLibCode/Application/RiaGuiApplication.cpp:1823
[23] RiaGuiApplication::notify(QObject*, QEvent*) at ResInsight/ApplicationLibCode/Application/RiaGuiApplication.cpp:1823
[35] RiuMainWindow::customMenuRequested(QPoint const&) at ResInsight/ApplicationLibCode/UserInterface/RiuMainWindow.cpp:2056
[43] RiaGuiApplication::notify(QObject*, QEvent*) at ResInsight/ApplicationLibCode/Application/RiaGuiApplication.cpp:1823
[48] RiaGuiApplication::notify(QObject*, QEvent*) at ResInsight/ApplicationLibCode/Application/RiaGuiApplication.cpp:1823
[59] main at ResInsight/ApplicationExeCode/RiaMain.cpp:226
[60] __libc_start_main at :0

Related call stack

[0] manageSegFailure(int) at ResInsight/ApplicationExeCode/RiaMainTools.cpp:86
[2] Rim3dView::scaleZ() const at ResInsight/ApplicationLibCode/ProjectDataModel/Rim3dView.cpp:1241
[3] RimViewLinker::updateDependentViews() at ResInsight/ApplicationLibCode/ProjectDataModel/RimViewLinker.cpp:325
[4] RicLinkVisibleViewsFeature::linkViews(std::vector<Rim3dView*, std::allocator<Rim3dView*> >&) at ResInsight/ApplicationLibCode/Commands/ViewLink/RicLinkVisibleViewsFeature.cpp:122
[5] RicLinkVisibleViewsFeature::onActionTriggered(bool) at ResInsight/ApplicationLibCode/Commands/ViewLink/RicLinkVisibleViewsFeature.cpp:68
[16] RiaGuiApplication::notify(QObject*, QEvent*) at ResInsight/ApplicationLibCode/Application/RiaGuiApplication.cpp:1826
[22] RiaGuiApplication::notify(QObject*, QEvent*) at ResInsight/ApplicationLibCode/Application/RiaGuiApplication.cpp:1826
[33] main at ResInsight/ApplicationExeCode/RiaMain.cpp:209
[34] __libc_start_main at :0