I18n: fix printf-style format translation in release/scripts/startup

Many reports and a few labels used string formatting without
explicitly calling tip_() or iface_(), so the untranslated message
was used instead of the translated one, even when it was extracted.

Differential Revision: https://developer.blender.org/D16405

release/scripts/startup/bl_operators/object_quick_effects.py

@@ -9,6 +9,7 @@ from bpy.props import (
     FloatProperty,
     IntProperty,
 )
+from bpy.app.translations import pgettext_tip as tip_
 
 
 def object_ensure_material(obj, mat_name):
@@ -176,8 +177,8 @@ class QuickExplode(ObjectModeOperator, Operator):
         for obj in mesh_objects:
             if obj.particle_systems:
                 self.report({'ERROR'},
-                            "Object %r already has a "
-                            "particle system" % obj.name)
+                            tip_("Object %r already has a "
+                                 "particle system") % obj.name)
 
                 return {'CANCELLED'}