MDEV-4226 [PATCH] "Unused variable" warnings in the tarball

sql/mysqld.cc

@@ -738,7 +738,7 @@ static char **remaining_argv;
 int orig_argc;
 char **orig_argv;
 
-static struct my_option pfs_early_options[]=
+static struct my_option pfs_early_options[] __attribute__((unused)) =
 {
   {"performance_schema_instrument", OPT_PFS_INSTRUMENT,
     "Default startup value for a performance schema instrument.",

vio/viosocket.c

@@ -923,7 +923,7 @@ static my_bool socket_peek_read(Vio *vio, uint *bytes)
 int vio_io_wait(Vio *vio, enum enum_vio_io_event event, int timeout)
 {
   int ret;
-  short revents= 0;
+  short revents __attribute__((unused)) = 0;
   struct pollfd pfd;
   my_socket sd= mysql_socket_getfd(vio->mysql_socket);
   MYSQL_SOCKET_WAIT_VARIABLES(locker, state) /* no ';' */