[epiphany] Fix invalid free of lowercase_host

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 0599136b5d1880ec57dd46efc02fe4624bb1cd4a
Author: Michael Catanzaro <mcatanzaro posteo net>
Date:   Thu Dec 20 00:12:02 2018 +0000

    Fix invalid free of lowercase_host
    
    This was introduced in fdb131cbfded9c49d24d5ef33d926a870cd9145c.

 embed/ephy-embed-utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/embed/ephy-embed-utils.c b/embed/ephy-embed-utils.c
index 52ed15c41..be9389630 100644
--- a/embed/ephy-embed-utils.c
+++ b/embed/ephy-embed-utils.c
@@ -308,7 +308,7 @@ static char *
 ensure_host_name_is_lowercase (const char *address)
 {
   g_autofree gchar *host = ephy_string_get_host_name (address);
-  g_autofree gchar *lowercase_host;
+  g_autofree gchar *lowercase_host = NULL;
   char *ret = NULL;
 
   if (host == NULL) {