mongodb: fix build (boost-1.62/NetBSD patch)

srcpkgs/mongodb/patches/boost162.patch

@@ -0,0 +1,15 @@
+$NetBSD: patch-src_mongo_db_fts_unicode_string.cpp,v 1.1 2016/10/10 13:15:40 ryoon Exp $
+
+* Fix build with boost 1.62.0
+
+--- src/mongo/db/fts/unicode/string.cpp.orig	2016-09-26 12:10:04.000000000 +0000
++++ src/mongo/db/fts/unicode/string.cpp
+@@ -274,7 +274,7 @@ bool String::substrMatch(const std::stri
+ 
+     // Case sensitive and diacritic sensitive.
+     return boost::algorithm::boyer_moore_search(
+-               haystack.begin(), haystack.end(), needle.begin(), needle.end()) != haystack.end();
++               haystack.begin(), haystack.end(), needle.begin(), needle.end()) != std::make_pair(haystack.end(), haystack.end());
+ }
+ 
+ }  // namespace unicode