cs_hash_dup_count segment fault for some data

[amutu]

postgres=# select samp2_load();

samp2_load

   3500

(1 row)

postgres=# select cs_hash_dup_count(ts,StackTopSignature) from myt_get();
NOTICE: IMCS command: hash_dup_count
The connection to the server was lost. Attempting reset: Failed.

the DDL and date of samp2 is here :https://github.com/amutu/data/blob/master/samp2

[knizhnik]

Thank you once again for reporting the problem.
Unfortunately this bug can be noticed only on large data sets so it is not detected by my tests.
Fixed.