Revert "Get it compiling on Android"

This reverts commit ba412d70.

deps/boost/property_tree/detail/ptree_implementation.hpp

@@ -664,8 +664,12 @@ namespace boost { namespace property_tree
     typename boost::enable_if<detail::is_translator<Translator>, Type>::type
     basic_ptree<K, D, C>::get_value(Translator tr) const
     {
-        if(boost::optional<Type> o = get_value_optional<Type>(tr))
+        if(boost::optional<Type> o = get_value_optional<Type>(tr)) {
             return *o;
+        }
+        BOOST_PROPERTY_TREE_THROW(ptree_bad_data(
+            std::string("conversion of data to type \"") +
+            typeid(Type).name() + "\" failed", data()));
     }
 
     template<class K, class D, class C>
@@ -816,8 +820,13 @@ namespace boost { namespace property_tree
     template<class Type, class Translator>
     void basic_ptree<K, D, C>::put_value(const Type &value, Translator tr)
     {
-        if(optional<data_type> o = tr.put_value(value))
+        if(optional<data_type> o = tr.put_value(value)) {
             data() = *o;
+        } else {
+            BOOST_PROPERTY_TREE_THROW(ptree_bad_data(
+                std::string("conversion of type \"") + typeid(Type).name() +
+                "\" to data failed", boost::any()));
+        }
     }
 
     template<class K, class D, class C>