plugin cache: fix memory leaks

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

src/modules/bank.c

@@ -411,6 +411,9 @@ static void AllocatePluginPath (vlc_object_t *p_this, const char *path,
                 free (cache[i].path);
             }
             free( cache );
+            for (size_t i = 0; i < bank.i_cache; i++)
+                free (bank.cache[i].path);
+            free (bank.cache);
             break;
         case CACHE_RESET:
             CacheSave (p_this, path, bank.cache, bank.i_cache);