Use unaligned output in another regression test query to reduce diff noise.

Use the unaligned/no rowcount output mode in a regression tests that
shows all built-in leakproof functions. Currently a new leakproof
function will often change the alignment of all existing functions,
making it hard to see the actual difference and creating unnecessary
patch conflicts.

Noticed while looking over a patch introducing new leakproof functions.

src/test/regress/sql/create_function_3.sql

@@ -107,11 +107,20 @@ CREATE FUNCTION functext_E_3(int) RETURNS bool LANGUAGE 'sql'
 
 RESET SESSION AUTHORIZATION;
 
+---
 -- list of built-in leakproof functions
+---
+
+-- temporarily disable fancy output, so catalog changes create less diff noise
+\a\t
+
 SELECT proname, prorettype::regtype, proargtypes::regtype[]
        FROM pg_proc JOIN pg_namespace ON pronamespace = pg_namespace.oid
        WHERE nspname = 'pg_catalog' AND proleakproof ORDER BY proname;
 
+-- restore normal output mode
+\a\t
+
 --
 -- CALLED ON NULL INPUT | RETURNS NULL ON NULL INPUT | STRICT
 --