fix Store<T>::eraseStatic()

apps/openmw/mwworld/store.hpp

@@ -187,6 +187,9 @@ namespace MWWorld
             T item;
             item.mId = Misc::StringUtils::lowerCase(id);
 
+            typename std::map<std::string, T>::iterator it = mStatic.find(item.mId);
+
+            if (it != mStatic.end() && Misc::StringUtils::ciEqual(it->second.mId, id)) {
                 // delete from the static part of mShared
                 typename std::vector<T *>::iterator sharedIter = mShared.begin();
                 for (; sharedIter != (mShared.begin()+mStatic.size()); ++sharedIter) {
@@ -195,10 +198,6 @@ namespace MWWorld
                         break;
                     }
                 }
-
-            typename std::map<std::string, T>::iterator it = mStatic.find(item.mId);
-
-            if (it != mStatic.end() && Misc::StringUtils::ciEqual(it->second.mId, id)) {
                 mStatic.erase(it);
             }