coverity#1326107 Unchecked return value

Change-Id: I6f2dc9c12349a5175ed34e22fa29d875d6b9bd0a

store/source/storpage.cxx

@@ -778,7 +778,7 @@ storeError OStorePageManager::remove (const OStorePageKey &rKey)
         base::releasePage (aDescr);
 
         // Release and free directory page.
-        base::free (aPage.location());
+        (void)base::free (aPage.location());
     }
 
     // Remove entry.