[epiphany] uri-tester: Fix unused variable warning

[Michael Catanzaro <mcatanzaro src gnome org>]

commit fe2d0367b11bf7d354629634a76c4f1b8d2cd675
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Dec 29 14:54:58 2016 -0600

    uri-tester: Fix unused variable warning

 embed/web-extension/ephy-uri-tester.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/embed/web-extension/ephy-uri-tester.c b/embed/web-extension/ephy-uri-tester.c
index d477d62..41b5b23 100644
--- a/embed/web-extension/ephy-uri-tester.c
+++ b/embed/web-extension/ephy-uri-tester.c
@@ -769,7 +769,9 @@ ephy_uri_tester_set_property (GObject      *object,
 static void
 ephy_uri_tester_dispose (GObject *object)
 {
+#ifdef HAVE_LIBHTTPSEVERYWHERE
   EphyUriTester *tester = EPHY_URI_TESTER (object);
+#endif
 
   LOG ("EphyUriTester disposing %p", object);