serialization: initialize `keep_going` to null

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/lib/serialization/serialization.nit b/lib/serialization/serialization.nit
index 1fec7e9..e3ca6b3 100644 (file)
--- a/lib/serialization/serialization.nit
+++ b/lib/serialization/serialization.nit
@@ -131,7 +131,7 @@ abstract class Deserializer
        # When at `true`, this may cause the accumulation of a lot of entries in `errors`.
        #
        # Default at `true`.
-       var keep_going: nullable Bool is writable
+       var keep_going: nullable Bool = null is writable
 
        # Errors encountered in the last call to `deserialize`
        var errors = new Array[Error]