[libgnome-volume-control] build: Fix non-alsa builds

[Florian MĂźllner <fmuellner src gnome org>]

commit 3f71aac04ba98c4fef815c3a23b00a9eec02ca4d
Author: Florian MĂźllner <fmuellner gnome org>
Date:   Thu Jul 20 01:23:29 2017 +0200

    build: Fix non-alsa builds
    
    The code only checks whether HAVE_ALSA is defined, not its value,
    so defining it to 0 doesn't work as expected ...

 meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meson.build b/meson.build
index 7433f6e..238f608 100644
--- a/meson.build
+++ b/meson.build
@@ -21,7 +21,7 @@ libpulse_glib = dependency('libpulse-mainloop-glib')
 cdata = configuration_data()
 cdata.set_quoted('GETTEXT_PACKAGE', get_option('package-name'))
 cdata.set_quoted('PACKAGE_VERSION', get_option('package-version'))
-cdata.set10('HAVE_ALSA', alsa.found())
+cdata.set('HAVE_ALSA', alsa.found())
 
 config = configure_file(
   input: 'config.h.meson',