[epiphany] web-extension: Fix blocking of URIs

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 3f11d72e80473dbbd2dcec69ecf25bbf828d2291
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Oct 24 21:33:58 2016 -0500

    web-extension: Fix blocking of URIs

 embed/web-extension/ephy-web-extension.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/embed/web-extension/ephy-web-extension.c b/embed/web-extension/ephy-web-extension.c
index 51f71c0..6fa8812 100644
--- a/embed/web-extension/ephy-web-extension.c
+++ b/embed/web-extension/ephy-web-extension.c
@@ -133,7 +133,8 @@ web_page_send_request (WebKitWebPage     *web_page,
                                                           page_uri);
   if (g_strcmp0 (request_uri, modified_uri) != 0) {
     LOG ("Rewrote %s to %s", request_uri, modified_uri);
-    webkit_uri_request_set_uri (request, modified_uri);
+    webkit_uri_request_set_uri (request,
+                                strlen (modified_uri) > 0 ? modified_uri : NULL);
   }
   g_free (modified_uri);