Security update for postgresql94 (important)

This update for postgresql94 to 9.4.19 fixes the following security issue:

• CVE-2018-10915: libpq failed to properly reset its internal state
  between connections. If an affected version of libpq was used with
  "host" or "hostaddr" connection parameters from untrusted input,
  attackers could have bypassed client-side connection security features,
  obtain access to higher privileged connections or potentially cause
  other impact SQL injection, by causing the PQescape() functions to
  malfunction (bsc#1104199).

A dump/restore is not required for this update unless you use the
functions query_to_xml, cursor_to_xml, cursor_to_xmlschema,
query_to_xmlschema, and query_to_xml_and_xmlschema. In this case please
see the first entry of
<a href=“https://www.postgresql.org/docs/9.4/static/release-9-4-18.html”>https://www.postgresql.org/docs/9.4/static/release-9-4-18.html</a>

This update was imported from the SUSE:SLE-12:Update update project.