[gtk+] docs: fix a parameter name of GtkEntry::populate-popup

[Sébastien Wilmet <swilmet src gnome org>]

commit 82b2bf2184fd8ce63909ff1442d36096ad6478d1
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Nov 26 12:23:14 2016 +0100

    docs: fix a parameter name of GtkEntry::populate-popup
    
    Trivial commit.
    
    The documentation block refers to @widget, not @popup. @widget is a
    better name since the type is GtkWidget.

 gtk/gtkentry.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkentry.c b/gtk/gtkentry.c
index 188be89..5616e51 100644
--- a/gtk/gtkentry.c
+++ b/gtk/gtkentry.c
@@ -1421,7 +1421,7 @@ gtk_entry_class_init (GtkEntryClass *class)
   /**
    * GtkEntry::populate-popup:
    * @entry: The entry on which the signal is emitted
-   * @popup: the container that is being populated
+   * @widget: the container that is being populated
    *
    * The ::populate-popup signal gets emitted before showing the
    * context menu of the entry.