Look in correct GeoIP directory first.

Index: scripts/base/init-bare.zeek
--- scripts/base/init-bare.zeek.orig
+++ scripts/base/init-bare.zeek
@@ -1539,6 +1539,7 @@ const mmdb_asn_db: string = "GeoLite2-ASN.mmdb" &redef
 ## each of the fallback locations, and should this fail, attempt to locate the
 ## country one.
 const mmdb_dir_fallbacks: vector of string = vector(
+	"/var/db/GeoIP",
 	"/usr/share/GeoIP",
 	"/var/lib/GeoIP",
 	"/usr/local/share/GeoIP",
