update osm2pgsql to 1.9.2

diff --git a/osm2pgsql b/osm2pgsql
index ea0178e97d5b69a87a8b9c35210c8be4674e60e6..415de9abdf2d003a5c0a0abe8e8fc139acacc2b5 160000 (submodule)
--- a/osm2pgsql
+++ b/osm2pgsql
@@ -1 +1 @@
-Subproject commit ea0178e97d5b69a87a8b9c35210c8be4674e60e6
+Subproject commit 415de9abdf2d003a5c0a0abe8e8fc139acacc2b5