Polishing

spring-web/src/main/java/org/springframework/http/HttpHeaders.java

@@ -2336,9 +2336,9 @@ public class HttpHeaders implements Serializable {
 
 			@Override
 			public List<String> setValue(List<String> value) {
-				List<String> previousValues = Objects.requireNonNull(CaseInsensitiveEntrySet.this.headers.get(this.key));
+				List<String> previous = Objects.requireNonNull(CaseInsensitiveEntrySet.this.headers.get(this.key));
 				CaseInsensitiveEntrySet.this.headers.put(this.key, value);
-				return previousValues;
+				return previous;
 			}
 
 			@Override

spring-webflux/src/main/java/org/springframework/web/reactive/result/method/InvocableHandlerMethod.java

@@ -148,7 +148,7 @@ public class InvocableHandlerMethod extends HandlerMethod {
 	/**
 	 * Configure a reactive adapter registry. This is needed for cases where the response is
 	 * fully handled within the controller in combination with an async void return value.
-	 * <p>By default this is a {@link ReactiveAdapterRegistry} with default settings.
+	 * <p>By default, this is a {@link ReactiveAdapterRegistry} with default settings.
 	 */
 	public void setReactiveAdapterRegistry(ReactiveAdapterRegistry registry) {
 		this.reactiveAdapterRegistry = registry;