diff --git a/library/xml b/library/xml
index 27fec9797..a54516705 160000
--- a/library/xml
+++ b/library/xml
@@ -1 +1 @@
-Subproject commit 27fec9797d7d1215bd3f5530b44a55a9d394fe75
+Subproject commit a545167050fee9eedd5e319b518d961f933154a3
diff --git a/plugins/zone.cpp b/plugins/zone.cpp
index 2f2b64588..9f71b85d8 100644
--- a/plugins/zone.cpp
+++ b/plugins/zone.cpp
@@ -890,6 +890,8 @@ df::general_ref_building_civzone_assignedst * createCivzoneRef()
     return newref;
 }
 
+bool isInBuiltCage(df::unit* unit);
+
 // check if assigned to pen, pit, (built) cage or chain
 // note: BUILDING_CAGED is not set for animals (maybe it's used for dwarves who get caged as sentence)
 // animals in cages (no matter if built or on stockpile) get the ref CONTAINED_IN_ITEM instead