[epiphany] Fix user agent construction after previous "simplification"

[Michael Catanzaro <mcatanzaro src gnome org>]

commit b011e03c5f52e403c23999e8c06c67b02c235b93
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Fri Jun 3 18:56:09 2016 -0500

    Fix user agent construction after previous "simplification"
    
    Oops.

 embed/ephy-embed-prefs.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/embed/ephy-embed-prefs.c b/embed/ephy-embed-prefs.c
index c39fef9..0c8c574 100644
--- a/embed/ephy-embed-prefs.c
+++ b/embed/ephy-embed-prefs.c
@@ -200,6 +200,8 @@ webkit_pref_callback_user_agent (GSettings  *settings,
 
   if (ephy_embed_shell_get_mode (shell) == EPHY_EMBED_SHELL_MODE_APPLICATION)
     user_agent = g_strdup_printf ("%s (WebappShell)", internal_user_agent);
+  else
+    user_agent = g_strdup (internal_user_agent);
 
   webkit_settings_set_user_agent (webkit_settings, user_agent);
   g_free (user_agent);