[gtksourceviewmm] StyleSchemeChooserWidget: Correct the underlying GType name.

[Murray Cumming <murrayc src gnome org>]

commit a9f7365671823f6a8f8c318e75cc2979331575be
Author: Kip Warner <kip thevertigo com>
Date:   Sat Feb 10 10:26:20 2018 +0100

    StyleSchemeChooserWidget: Correct the underlying GType name.
    
    So this class can be instantiated.
    Bug #793204

 gtksourceview/src/styleschemechooserwidget.hg |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtksourceview/src/styleschemechooserwidget.hg b/gtksourceview/src/styleschemechooserwidget.hg
index d9ba707..eefe7d8 100644
--- a/gtksourceview/src/styleschemechooserwidget.hg
+++ b/gtksourceview/src/styleschemechooserwidget.hg
@@ -35,7 +35,7 @@ namespace Gsv
  */
 class StyleSchemeChooserWidget : public Gtk::Bin
 {
-  _CLASS_GTKOBJECT(StyleSchemeChooserWidget, GtkSourceStyleStyleSchemeChooserWidget, 
GTK_SOURCE_STYLE_SCHEME_CHOOSER_WIDGET, Gtk::Bin, GtkBin)
+  _CLASS_GTKOBJECT(StyleSchemeChooserWidget, GtkSourceStyleSchemeChooserWidget, 
GTK_SOURCE_STYLE_SCHEME_CHOOSER_WIDGET, Gtk::Bin, GtkBin)
 
 public: