[2436] explicitly include <string>, just in case.

diff --git a/src/lib/datasrc/zone_loader.cc b/src/lib/datasrc/zone_loader.cc
index 54d0a407d35687ee8686229fe841ac3e350e5591..348c52b7de306bdf30391c703b37a396677434ea 100644 (file)
--- a/src/lib/datasrc/zone_loader.cc
+++ b/src/lib/datasrc/zone_loader.cc
@@ -27,6 +27,8 @@
 
 #include <boost/bind.hpp>
 
+#include <string>
+
 using isc::dns::Name;
 using isc::dns::ConstRRsetPtr;
 using isc::dns::MasterLoader;