Always close the server in finally block.

BUG=

Review URL: https://codereview.chromium.org/508233002

Cr-Commit-Position: refs/heads/master@{#292246}

android_webview/javatests/src/org/chromium/android_webview/test/AwSettingsTest.java

@@ -2778,8 +2778,11 @@ public class AwSettingsTest extends AwTestBase {
 
         awSettings.setJavaScriptEnabled(true);
 
-        TestWebServer httpsServer = new TestWebServer(true);
-        TestWebServer httpServer = new TestWebServer(false);
+        TestWebServer httpsServer = null;
+        TestWebServer httpServer = null;
+        try {
+            httpsServer = new TestWebServer(true);
+            httpServer = new TestWebServer(false);
 
             final String JS_URL = "/insecure.js";
             final String IMG_URL = "/insecure.png";
@@ -2811,10 +2814,15 @@ public class AwSettingsTest extends AwTestBase {
             assertEquals(3, httpsServer.getRequestCount(SECURE_URL));
             assertEquals(1, httpServer.getRequestCount(JS_URL));
             assertEquals(2, httpServer.getRequestCount(IMG_URL));
-
+        } finally {
+            if (httpServer != null) {
                 httpServer.shutdown();
+            }
+            if (httpsServer != null) {
                 httpsServer.shutdown();
             }
+        }
+    }
 
 
     static class ViewPair {