[nautilus] Correctly show the multiple files warning

[Cosimo Cecchi <cosimoc src gnome org>]

commit 6d91cfb1d053a433cc5e17336c2e22c4e1d71673
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sun Aug 1 14:53:43 2010 +0200

    Correctly show the multiple files warning
    
    Only show it when we're actually opening files, not folders.

 libnautilus-private/nautilus-mime-actions.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/libnautilus-private/nautilus-mime-actions.c b/libnautilus-private/nautilus-mime-actions.c
index fb39956..43489bf 100644
--- a/libnautilus-private/nautilus-mime-actions.c
+++ b/libnautilus-private/nautilus-mime-actions.c
@@ -1837,7 +1837,9 @@ activate_files (ActivateParameters *parameters)
 	num_files = g_list_length (open_in_app_uris);
 	open_files = TRUE;
 
-	if (!parameters->user_confirmation || num_files + num_unhandled > SILENT_OPEN_LIMIT) {
+	if (open_in_app_uris != NULL &&
+	    (!parameters->user_confirmation ||
+	     num_files + num_unhandled > SILENT_OPEN_LIMIT)) {
 		GtkDialog *dialog;
 		char *prompt;
 		char *detail;