Issue #6085 Fix duplicate valid session cookies to pick first valid.

Fixed typo and stopping server & client in testMulitpleIdenticalSessionCookies().

Signed-off-by: Simone Bordet <simone.bordet@gmail.com>

tests/test-sessions/test-sessions-common/src/test/java/org/eclipse/jetty/server/session/DuplicateCookieTest.java

@@ -324,7 +324,7 @@ public void testMultipleSessionCookiesMultipleExists() throws Exception
     }
 
     @Test
-    public void testMulitpleIdenticalSessionCookies() throws Exception
+    public void testMultipleIdenticalSessionCookies() throws Exception
     {
         String contextPath = "";
         String servletMapping = "/server";
@@ -364,6 +364,11 @@ public void testMulitpleIdenticalSessionCookies() throws Exception
             //check that all valid sessions have their request counts decremented correctly after the request, back to 0
             assertEquals(0, s1234.getRequests());
         }
+        finally
+        {
+            server1.stop();
+            client.stop();
+        }
     }
 
     public Session createUnExpiredSession(SessionCache cache, SessionDataStore store, String id) throws Exception