fix compile - followup to mapnik#2880

Dane Springmeyer · Dane Springmeyer · commit e17505686ccf · 2015-06-03T14:16:30.000-07:00
diff --git a/test/unit/serialization/xml_parser_trim.cpp b/test/unit/serialization/xml_parser_trim.cpp
@@ -4,6 +4,7 @@
 #include <mapnik/value.hpp>
 #include <mapnik/xml_tree.hpp>
 #include <mapnik/xml_loader.hpp>
+#include <mapnik/attribute.hpp>
 
 TEST_CASE("xml parser") {
 
