monitors: guard output when read

src/Compositor.cpp

@@ -1836,6 +1836,9 @@ CMonitor* CCompositor::getMonitorFromString(const std::string& name) {
         const auto DESCRIPTION = name.substr(5);
 
         for (auto& m : m_vMonitors) {
+            if (!m->output)
+                continue;
+
             if (m->output->description && std::string(m->output->description).find(DESCRIPTION) == 0) {
                 return m.get();
             }

src/config/ConfigManager.cpp

@@ -1761,6 +1761,9 @@ bool CConfigManager::shouldBlurLS(const std::string& ns) {
 
 void CConfigManager::ensureDPMS() {
     for (auto& rm : g_pCompositor->m_vRealMonitors) {
+        if (!rm->output)
+            continue;
+
         auto rule = getMonitorRuleFor(rm->szName, rm->output->description ? rm->output->description : "");
 
         if (rule.disabled == rm->m_bEnabled) {
@@ -1774,6 +1777,9 @@ void CConfigManager::ensureVRR(CMonitor* pMonitor) {
     static auto* const PVRR = &getConfigValuePtr("misc:vrr")->intValue;
 
     static auto        ensureVRRForDisplay = [&](CMonitor* m) -> void {
+        if (!m->output)
+            return;
+
         if (*PVRR == 0) {
             if (m->vrrActive) {
                 wlr_output_enable_adaptive_sync(m->output, 0);

src/managers/KeybindManager.cpp

@@ -1661,6 +1661,9 @@ void CKeybindManager::forceRendererReload(std::string args) {
     bool overAgain = false;
 
     for (auto& m : g_pCompositor->m_vMonitors) {
+        if (!m->output)
+            continue;
+
         auto rule = g_pConfigManager->getMonitorRuleFor(m->szName, m->output->description ? m->output->description : "");
         if (!g_pHyprRenderer->applyMonitorRule(m.get(), &rule, true)) {
             overAgain = true;