Remove trailing whitespace from source code

spring-web/src/test/java/org/springframework/http/client/OkHttpAsyncClientHttpRequestFactoryTests.java

@@ -24,7 +24,7 @@ import org.springframework.http.HttpMethod;
  * @author Luciano Leggieri
  */
 public class OkHttpAsyncClientHttpRequestFactoryTests extends AbstractAsyncHttpRequestFactoryTestCase {
- 
+
     @Override
     protected AsyncClientHttpRequestFactory createRequestFactory() {
         return new OkHttpClientHttpRequestFactory();

spring-web/src/test/java/org/springframework/web/context/request/async/StandardServletAsyncWebRequestTests.java

@@ -147,7 +147,7 @@ public class StandardServletAsyncWebRequestTests {
 	}
 
 	// SPR-13292
-	
+
 	@Test
 	public void onCompletionHandlerAfterOnErrorEvent() throws Exception {
 		Runnable handler = mock(Runnable.class);