[gnome-text-editor] build: handle development versions of GtkSourceView ABI

[Christian Hergert <chergert src gnome org>]

commit 402a3282b8c2cca9f04777aacc17eddbb4a6f35b
Author: Christian Hergert <chergert redhat com>
Date:   Sun Jul 25 14:02:27 2021 -0700

    build: handle development versions of GtkSourceView ABI

 meson.build | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/meson.build b/meson.build
index 6ec0070..c1f06ba 100644
--- a/meson.build
+++ b/meson.build
@@ -47,6 +47,9 @@ endif
 if gtk_minor % 2 == 1
   gtk_minor = gtk_minor + 1
 endif
+if gtksourceview_minor % 2 == 1
+  gtksourceview_minor = gtksourceview_minor + 1
+endif
 
 config_h = configuration_data()
 config_h.set_quoted('APP_ID', app_id)