[gtk+] build: Correct PangoCairo required version

[Chun-wei Fan <fanchunwei src gnome org>]

commit fc5f391110f71190db3a73a8722ba409336eedf3
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Tue Sep 12 13:31:28 2017 +0800

    build: Correct PangoCairo required version
    
    We ought to use pango_req instead of cairo_req for the version required
    for PangoCairo.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=785210

 meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meson.build b/meson.build
index 7bc8912..8e90f9e 100644
--- a/meson.build
+++ b/meson.build
@@ -329,7 +329,7 @@ pango_dep      = dependency('pango', version: pango_req,
                             fallback : ['pango', 'libpango_dep'])
 pangoft_dep    = dependency('pangoft2', required: wayland_enabled or x11_enabled,
                             fallback : ['pango', 'libpangoft2_dep'])
-pangocairo_dep = dependency('pangocairo', version: cairo_req,
+pangocairo_dep = dependency('pangocairo', version: pango_req,
                             fallback : ['pango', 'libpangocairo_dep'])
 pixbuf_dep     = dependency('gdk-pixbuf-2.0', version: gdk_pixbuf_req,
                             fallback : ['gdk-pixbuf', 'gdkpixbuf_dep'])