fix: fix tests

Author: blakeli0

gax-java/gax/src/test/java/com/google/api/gax/rpc/EndpointContextTest.java

@@ -641,17 +641,15 @@ void endpointContextBuild_resolvesServerAddress() throws IOException {
 
   @Test
   void endpointContextBuild_resolvesPort() throws IOException {
-
     String endpoint = "http://localhost:7469";
-
     EndpointContext endpointContext =
         defaultEndpointContextBuilder
             .setClientSettingsEndpoint(endpoint)
             .setTransportChannelProviderEndpoint(null)
             .build();
     Truth.assertThat(endpointContext.resolvedServerPort()).isEqualTo(7469);
 
-    endpoint = "localhost:-1";
+    endpoint = "localhost:7469";
     endpointContext =
         defaultEndpointContextBuilder
             .setClientSettingsEndpoint(endpoint)