serde: Don't error when deserializing IgnoredAny from a list

ruma-serde/CHANGELOG.md

@@ -1,3 +1,9 @@
+# 0.3.1
+
+Bug fixes:
+
+* Fix an edge case in query parameter deserialization
+
 # 0.3.0
 
 Breaking changes:

ruma-serde/src/urlencoded/de/val_or_vec.rs

@@ -194,6 +194,13 @@ where
         self.deserialize_val(move |val| val.deserialize_newtype_struct(name, visitor))
     }
 
+    fn deserialize_ignored_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
+    where
+        V: de::Visitor<'de>,
+    {
+        visitor.visit_unit()
+    }
+
     forward_to_part! {
         deserialize_bool,
         deserialize_char,
@@ -214,7 +221,6 @@ where
         deserialize_f64,
         deserialize_option,
         deserialize_identifier,
-        deserialize_ignored_any,
         deserialize_map,
     }
 }

ruma-serde/tests/url_deserialize.rs

@@ -89,6 +89,7 @@ fn deserialize_struct() {
     let de = Params { a: 10, b: "Hello", c: None };
     assert_eq!(urlencoded::from_str("a=10&b=Hello"), Ok(de));
     assert_eq!(urlencoded::from_str("b=Hello&a=10"), Ok(de));
+    assert_eq!(urlencoded::from_str("a=10&b=Hello&d=1&d=2"), Ok(de));
 }
 
 #[test]