some last patches breaks plan cache

[Pavel Stehule]

Hi

CREATE OR REPLACE PROCEDURE public.proc(a integer, INOUT b integer, c
integer)
 LANGUAGE plpgsql
AS $procedure$
begin
  b := a + c;
end;
$procedure$

CREATE OR REPLACE PROCEDURE public.testproc()
 LANGUAGE plpgsql
AS $procedure$
declare r int;
begin
  call proc(10, r, 20);
end;
$procedure$

postgres=# call testproc();
CALL
postgres=# call testproc();
ERROR:  SPI_execute_plan_with_paramlist failed executing query "CALL
proc(10, r, 20)": SPI_ERROR_ARGUMENT
CONTEXT:  PL/pgSQL function testproc() line 4 at CALL
postgres=#

second call fails

Regards

Pavel