update osm2pgsql to use reinitialized github repo

diff --git a/osm2pgsql b/osm2pgsql
index 3d839831c83b9c9ce04bdd039f102df73beb7d88..6bea5101857c3be80891e42e3b5f71024ca4b798 160000 (submodule)
--- a/osm2pgsql
+++ b/osm2pgsql
@@ -1 +1 @@
-Subproject commit 3d839831c83b9c9ce04bdd039f102df73beb7d88
+Subproject commit 6bea5101857c3be80891e42e3b5f71024ca4b798