AK: Have `JsonArray::set()` change values instead of inserting values

Resolves #18618.

8134dcc changed `JsonArray::set()` to insert elements at an index
instead of changing existing elements in-place. Since no behavior
such as `Vector::try_at()` exists yet, it returns nothing.

1 files changed, 1 insertions, 1 deletions

diff --git a/AK/JsonArray.h b/AK/JsonArray.h
index e292defa48..1154925568 100644
--- a/AK/JsonArray.h
+++ b/AK/JsonArray.h
@@ -66,7 +66,7 @@ public:
 
     void clear() { m_values.clear(); }
     ErrorOr<void> append(JsonValue value) { return m_values.try_append(move(value)); }
-    ErrorOr<void> set(size_t index, JsonValue value) { return m_values.try_insert(index, move(value)); }
+    void set(size_t index, JsonValue value) { m_values.at(index) = move(value); }
 
     template<typename Builder>
     typename Builder::OutputType serialized() const;