Always check for nullptr before accessing KNSCore::EntryWrapper

kcms/colors/colors.cpp

@@ -119,6 +119,9 @@ bool KCMColors::downloadingFile() const
 
 void KCMColors::knsEntryChanged(KNSCore::EntryWrapper *entry)
 {
+    if (!entry) {
+        return;
+    }
     m_model->load();
 
     // If a new theme was installed, select the first color file in it

kcms/lookandfeel/kcm.cpp

@@ -119,6 +119,9 @@ KCMLookandFeel::~KCMLookandFeel()
 
 void KCMLookandFeel::knsEntryChanged(KNSCore::EntryWrapper *wrapper)
 {
+    if (!wrapper) {
+        return;
+    }
     const KNSCore::EntryInternal entry = wrapper->entry();
     auto removeItemFromModel = [&entry, this]() {
         const QString guessedPluginId = QFileInfo(entry.uninstalledFiles().constFirst()).fileName();