update to newest osm2pgsql

diff --git a/osm2pgsql b/osm2pgsql
index dc7cc1b6725958f09afb32379a3d937df75cdd70..5f0cc512e6fe192fc1c4754eed77b142663e38de 160000 (submodule)
--- a/osm2pgsql
+++ b/osm2pgsql
@@ -1 +1 @@
-Subproject commit dc7cc1b6725958f09afb32379a3d937df75cdd70
+Subproject commit 5f0cc512e6fe192fc1c4754eed77b142663e38de