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

@@ -597,6 +597,8 @@ QList<ContentSelectorModel::LoadOrderError> ContentSelectorModel::ContentModel::
         {
             errors.append(LoadOrderError(LoadOrderError::ErrorCode_MissingDependency, dependentfileName));
         }
+        else
+        {
             if (!isChecked(dependentFile->filePath()))
             {
                 errors.append(LoadOrderError(LoadOrderError::ErrorCode_InactiveDependency, dependentfileName));
@@ -606,6 +608,7 @@ QList<ContentSelectorModel::LoadOrderError> ContentSelectorModel::ContentModel::
                 errors.append(LoadOrderError(LoadOrderError::ErrorCode_LoadOrder, dependentfileName));
             }
         }
+    }
     return errors;
 }