Increase the number of passing tests

examples/001_serialize.c

@@ -18,7 +18,7 @@ int main(void)
     }
 
     char buf[1<<9];
-    ret = url_serialize(&parsed_url, NULL, buf, sizeof(buf));
+    ret = url_serialize(parsed_url, NULL, buf, sizeof(buf));
 
     // On error, url_serialize returns -1. Errors can
     // only occur when relative references are involved,

examples/003_references.c

@@ -36,7 +36,7 @@ int main(void)
     // Now we can resolve the reference by serializing it with
     // the base URL
     char buf[1<<9];
-    ret = url_serialize(&parsed_relative_reference, &parsed_base_url, buf, sizeof(buf));
+    ret = url_serialize(parsed_relative_reference, &parsed_base_url, buf, sizeof(buf));
 
     // Since url_serialize was called with a non-NULL base URL
     // argument, it may fail. We need to check for a negative