[retro-gtk/meson-version-variable] meson: Don't override retro_gtk_version

[Adrien Plazas <aplazas src gnome org>]

commit a973c350542b6a1d846b94d0bad7cdfa7e79a4ec
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sun Feb 16 17:05:53 2020 +0100

    meson: Don't override retro_gtk_version
    
    This renames the definition of retro_gtk_version in
    retro-gtk/meson.build to avoid overriding the ones from the root
    meson.build.

 retro-gtk/meson.build | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/retro-gtk/meson.build b/retro-gtk/meson.build
index 25a83b7..baf9737 100644
--- a/retro-gtk/meson.build
+++ b/retro-gtk/meson.build
@@ -66,7 +66,7 @@ version_conf.set('MAJOR_VERSION', MAJOR_VERSION)
 version_conf.set('MINOR_VERSION', MINOR_VERSION)
 version_conf.set('MICRO_VERSION', MICRO_VERSION)
 
-retro_gtk_version = configure_file(
+retro_gtk_version_h = configure_file(
   input: 'retro-gtk-version.h.in',
   output: 'retro-gtk-version.h',
   configuration: version_conf,
@@ -100,7 +100,7 @@ retro_gtk_lib = shared_library(
 )
 
 retro_gtk_dep_sources = [
-  retro_gtk_version,
+  retro_gtk_version_h,
 ]
 
 if get_option('introspection')