File mongoc_init.patch of Package mongo_fdw

--- mongo_fdw.c.orig	2017-04-20 10:45:17.055432368 +0300
+++ mongo_fdw.c	2017-04-20 10:45:33.671997743 +0300
@@ -172,6 +172,7 @@
 _PG_init(void)
 {
 	on_proc_exit(&mongo_fdw_exit, PointerGetDatum(NULL));
+	mongoc_init();
 }
 
 /*