pkg: use libpcre3 over libpcre2 on old distributions

Author: Kaian

pkg/debian/control

@@ -1,6 +1,6 @@
 Source: sngrep
 Section: comm
-Build-Depends: dh-autoreconf, debhelper, libpcap-dev, libncursesw5-dev, gnutls-dev, libgcrypt-dev, libpcre2-dev, libncurses5-dev, pkg-config
+Build-Depends: dh-autoreconf, debhelper, libpcap-dev, libncursesw5-dev, gnutls-dev, libgcrypt-dev, libpcre3-dev | libpcre2-dev, libncurses5-dev, pkg-config
 Priority: optional
 Standards-Version: 3.9.6
 Homepage: https://github.com/irontec/sngrep
@@ -9,7 +9,7 @@ Maintainer: Ivan Alonso <[email protected]>
 Package: sngrep
 Architecture: any
 Pre-Depends: ${misc:Pre-Depends}
-Depends: ${misc:Depends}, ${shlibs:Depends}, libpcap0.8, libncursesw5 | libncursesw6, libpcre2 | libpcre2-8-0
+Depends: ${misc:Depends}, ${shlibs:Depends}, libpcap0.8, libncursesw5 | libncursesw6, libpcre3 | libpcre2 | libpcre2-8-0
 Description: Ncurses SIP Messages flow viewer
  sngrep displays SIP Messages grouped by Call-Id into flow
  diagrams. It can be used as an offline PCAP viewer or online