Fix broken I2PSocketEepGet test, add additional case

Broken in 49d33fa03636041c4da35476539a3b6aa318da11 by the move from URL to URI.
If URI is passed a URL with a negative port, URI.getHost() returns null, which
bypasses the coercion-to-80. Zero, OTOH, is still coerced.

apps/ministreaming/java/test/junit/net/i2p/client/streaming/I2PSocketEepGetTest.java

@@ -117,8 +117,14 @@ public class I2PSocketEepGetTest {
 
     @Test
     public void testFetch_negPort() {
+        // Fails, because URI is stricter than URL
+        fetchFrom("http://" + STATS_HOST + ":-1", false);
+    }
+
+    @Test
+    public void testFetch_zeroPort() {
         // Gets rewritten to 80
-        fetchFrom("http://" + STATS_HOST + ":-1", true);
+        fetchFrom("http://" + STATS_HOST + ":0", true);
     }
 
     @Test