[gimp] plug-ins: localization calls must happens inside query().

[Jehan <jehanp src gnome org>]

commit 3945701bd64638091452655dbe667d5ce5b444b3
Author: Jehan <jehan girinstud io>
Date:   Fri Aug 2 12:58:37 2019 +0200

    plug-ins: localization calls must happens inside query().
    
    It's a bit weird because this has to happen during the query() step, but
    plug-ins don't have access to this step anymore, apart from
    query_procedures(), which then turns out to be badly named.

 plug-ins/python/palette-to-gradient.py | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)
---
diff --git a/plug-ins/python/palette-to-gradient.py b/plug-ins/python/palette-to-gradient.py
index efea15df52..9d0bc59306 100644
--- a/plug-ins/python/palette-to-gradient.py
+++ b/plug-ins/python/palette-to-gradient.py
@@ -51,11 +51,6 @@ def make_gradient(palette, num_segments, num_colors):
     return len(retval), retval
 
 def palette_to_gradient(procedure, args, data):
-    # Localization
-    plug_in = procedure.get_plug_in()
-    plug_in.set_translation_domain ("gimp30-python",
-                                    Gio.file_new_for_path(Gimp.locale_directory()))
-
     palette = Gimp.context_get_palette()
     (_, num_colors) = Gimp.palette_get_info(palette)
 
@@ -80,6 +75,10 @@ def palette_to_gradient(procedure, args, data):
 
 class PaletteToGradient (Gimp.PlugIn):
     def do_query_procedures(self):
+        # Localization
+        self.set_translation_domain ("gimp30-python",
+                                     Gio.file_new_for_path(Gimp.locale_directory()))
+
         # XXX See pygobject#352 for the weird return value.
         return ['python-fu-palette-to-gradient',
                 'python-fu-palette-to-gradient-repeating'], 2