[epiphany/gnome-3-28] session: Fix crash when JS opens an invalid URI

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 8c434004c0c5937c948cec6cccd95f547a0c14df
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Tue May 22 21:06:32 2018 -0500

    session: Fix crash when JS opens an invalid URI
    
    https://bugzilla.gnome.org/show_bug.cgi?id=795740

 src/ephy-session.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/src/ephy-session.c b/src/ephy-session.c
index 8a86cea..532930e 100644
--- a/src/ephy-session.c
+++ b/src/ephy-session.c
@@ -828,8 +828,15 @@ session_seems_sane (GList *windows)
       SoupURI *uri;
       gboolean sane = FALSE;
 
+      /* NULL URLs are possible when an invalid URL is opened by JS.
+       * E.g. <script>win = window.open("blah", "WIN");</script>
+       */
+      if (url == NULL)
+        continue;
+
       /* Blank URLs can occur in some situations. Just ignore these, as they
-       * are harmless and not an indicator of a corrupted session. */
+       * are harmless and not an indicator of a corrupted session.
+       */
       if (strcmp (url, "") == 0)
         continue;