[gnome-latex] DocumentTab: do not use tepl_file_is_local()

[Sébastien Wilmet <swilmet src gnome org>]

commit bd7689a0bf5e4d94eeea20da1d6544defc359c26
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Mon May 18 14:45:43 2020 +0200

    DocumentTab: do not use tepl_file_is_local()
    
    tepl_file_is_local() will be removed, maybe just temporarily.

 src/document_tab.vala | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/src/document_tab.vala b/src/document_tab.vala
index 7ca7215..a42bda3 100644
--- a/src/document_tab.vala
+++ b/src/document_tab.vala
@@ -156,7 +156,10 @@ public class DocumentTab : Tepl.Tab
             return false;
 
         // if file was never saved or is remote we do not check
-        if (!get_buffer ().get_file ().is_local ())
+        File? location = get_buffer ().get_file ().get_location ();
+        if (location == null)
+            return false;
+        if (!location.has_uri_scheme ("file"))
             return false;
 
         if (document.is_externally_modified ())