Bugfix: OpenCS segfault when plug-in dependency not found.

When a file that a plug-in depends on cannot be found, the OpenCS file dialog crashes.
Similar problem exists in omwlauncher's "Data Files" dialog.

components/contentselector/model/contentmodel.cpp

@@ -597,13 +597,16 @@ QList<ContentSelectorModel::LoadOrderError> ContentSelectorModel::ContentModel::
         {
             errors.append(LoadOrderError(LoadOrderError::ErrorCode_MissingDependency, dependentfileName));
         }
-        if (!isChecked(dependentFile->filePath()))
+        else
-        {
-            errors.append(LoadOrderError(LoadOrderError::ErrorCode_InactiveDependency, dependentfileName));
-        }
-        if (row < indexFromItem(dependentFile).row())
         {
-            errors.append(LoadOrderError(LoadOrderError::ErrorCode_LoadOrder, dependentfileName));
+            if (!isChecked(dependentFile->filePath()))
+            {
+                errors.append(LoadOrderError(LoadOrderError::ErrorCode_InactiveDependency, dependentfileName));
+            }
+            if (row < indexFromItem(dependentFile).row())
+            {
+                errors.append(LoadOrderError(LoadOrderError::ErrorCode_LoadOrder, dependentfileName));
+            }
         }
     }
     return errors;