[epiphany/gnome-3-30] web-extension: avoid invalid password save requests

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 5dceef99f56eff46a3d7733b10edfd914ef02ad0
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Thu Apr 18 15:24:58 2019 -0500

    web-extension: avoid invalid password save requests
    
    This fixes the same issue addressed by !268, but for the 3.30 branch.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1701250

 embed/web-extension/ephy-web-extension.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/embed/web-extension/ephy-web-extension.c b/embed/web-extension/ephy-web-extension.c
index 9b3fddfa7..bb1fdc3ab 100644
--- a/embed/web-extension/ephy-web-extension.c
+++ b/embed/web-extension/ephy-web-extension.c
@@ -548,9 +548,9 @@ handle_method_call (GDBusConnection       *connection,
       ephy_password_manager_save (extension->password_manager,
                                   request->origin,
                                   request->target_origin,
-                                  request->username,
+                                  request->username && request->username_field_name ? request->username : 
NULL,
                                   request->password,
-                                  request->username_field_name,
+                                  request->username_field_name && request->username ? 
request->username_field_name : NULL,
                                   request->password_field_name,
                                   request->is_new);
     }