sql_config_count() artificially limits number scope to 4byte-integer on PostgreSQL and Firebird

I get an error

Value '6185080811' is out of range type integer.

Problem is here in functions.php funktion set_config_count
line 182.

int4 for postgresql are only up to 2147483647. If the sum of the uploaded files(size) is over these limit, i get the described error.
No problem if im under 2 GB as filesize in summary, but im already arround 6 GB

I fixed it with changing int4 to int8