OPNSense/core 557d913. plist, src/etc/inc PEAR.inc IPv6.inc

Replace PEAR_ERROR with return null and delete PEAR.inc (#3006)

(cherry picked from commit 2a149a054cdc2526e5437f8271d201766965b9f9)
(cherry picked from commit 933f9356243635801746d9d9fa56240463f65a35)
DeltaFile
+0-1,103src/etc/inc/PEAR.inc
+3-21src/etc/inc/IPv6.inc
+0-1plist
+3-1,1253 files

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