Fix for Bug#37810:

The "show status" may be received by the server in a startup state, where it only can reject the statement, so that the client then react with 2013.
So, adding 2013 to the list of errors may help, as the "show status" will be repeated then. 

mysql-test/include/wait_until_connected_again.inc

@@ -6,7 +6,7 @@
 let $counter= 500;
 while ($mysql_errno)
 {
-  --error 0,2002,2006
+  --error 0,2002,2006,2013
   show status;
 
   dec $counter;