db_mysql: right position for define KSR_MYSQL_OPT_RECONNECT

- follow up of previous commit

src/modules/db_mysql/km_my_con.c

@@ -48,10 +48,10 @@ extern char *db_mysql_opt_ssl_ca;
 #define KSR_MYSQL_OPT_RECONNECT
 #else
 #if MYSQL_VERSION_ID < 80034
-#endif
 #define KSR_MYSQL_OPT_RECONNECT
 #endif
 #endif
+#endif
 
 /*! \brief
  * Create a new connection structure,