[gimp] app: use the proper help ID in gimp_operation_tool_get_settings_ui()

[Michael Natterer <mitch src gnome org>]

commit b10fd2aa3023b4a01b75fbfaa1e75e8b3684bd3b
Author: Michael Natterer <mitch gimp org>
Date:   Wed May 11 14:38:33 2016 +0200

    app: use the proper help ID in gimp_operation_tool_get_settings_ui()
    
    GimpFilterTool has the right help ID since a while, no need to
    use a dummy help ID aly longer.

 app/tools/gimpoperationtool.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/app/tools/gimpoperationtool.c b/app/tools/gimpoperationtool.c
index 985d4af..f868d26 100644
--- a/app/tools/gimpoperationtool.c
+++ b/app/tools/gimpoperationtool.c
@@ -350,7 +350,7 @@ gimp_operation_tool_get_settings_ui (GimpFilterTool  *filter_tool,
                                                             file,
                                                             import_title,
                                                             export_title,
-                                                            "help-foo",
+                                                            file_dialog_help_id,
                                                             NULL, /* sic */
                                                             settings_box);