Fix a compiler warning

spetrunia · spetrunia · commit fff61e31eca8 · 2017-05-17T14:44:16.000+03:00
diff --git a/storage/rocksdb/rdb_datadic.h b/storage/rocksdb/rdb_datadic.h
@@ -751,6 +751,7 @@ class Rdb_seq_generator {
 
 interface Rdb_tables_scanner {
   virtual int add_table(Rdb_tbl_def * tdef) = 0;
+  virtual ~Rdb_tables_scanner() {} /* Keep the compiler happy */
 };
 
 /*
