Fix deserialization of PullRequest with empty body in changelog tool

examples/changelog/src/changelog.rs

@@ -306,7 +306,7 @@ impl Contribution {
 pub struct PullRequest {
     pub id: u64,
     pub title: String,
-    pub description: String,
+    pub description: Option<String>,
     pub labels: Vec<String>,
     pub author: String,
 }
@@ -334,7 +334,7 @@ impl PullRequest {
         #[derive(Deserialize)]
         struct Schema {
             title: String,
-            body: String,
+            body: Option<String>,
             user: User,
             labels: Vec<Label>,
         }

examples/changelog/src/main.rs

@@ -90,8 +90,13 @@ impl Generator {
                     return Task::none();
                 };
 
-                let description =
-                    markdown::parse(&pull_request.description).collect();
+                let description = markdown::parse(
+                    pull_request
+                        .description
+                        .as_deref()
+                        .unwrap_or("*No description provided*"),
+                )
+                .collect();
 
                 *state = State::Loaded {
                     title: pull_request.title.clone(),