NULL value crash backend

[matteodurighetto]

Hello,
If I use NULL value the backend will crash

normal value :
test=# select cs_avg(col3) from endless_get('ghghghghg');

cs_avg

  4

(1 row)
existing value :
test=# select cs_avg(col3) from endless_get('testing');

cs_avg

(1 row)
NULL value :
test=# select cs_avg(col3) from endless_get(NULL);
The connection to the server was lost. Attempting reset: Failed.
!>

Bye