Fix compile errors

You know, it would be a lot better if people would either get a clean compile themselves, or use a PR and wait a few hours until Travis and AppVeyor pass their changes.

But, since people with direct push access don't bother making sure their changes actually compile, I suppose we'll always have stupid commits, like this one, cleaning up the mess.

src/units/types.cpp

@@ -155,12 +155,12 @@ unit_type::~unit_type()
 
 unit_type::ability_metadata::ability_metadata(const config& cfg)
 	: id(cfg["id"])
-	, name(cfg["name"])
-	, name_inactive(cfg["name_inactive"])
-	, female_name(cfg["female_name"])
-	, female_name_inactive(cfg["female_name_inactive"])
-	, description(cfg["description"])
-	, description_inactive(cfg["description_inactive"])
+	, name(cfg["name"].t_str())
+	, name_inactive(cfg["name_inactive"].t_str())
+	, female_name(cfg["female_name"].t_str())
+	, female_name_inactive(cfg["female_name_inactive"].t_str())
+	, description(cfg["description"].t_str())
+	, description_inactive(cfg["description_inactive"].t_str())
 	, affect_self(cfg["affect_self"].to_bool())
 	, affect_allies(cfg["affect_allies"].to_bool())
 	, affect_enemies(cfg["affect_enemies"].to_bool())