[gupnp] build: Add fallback option for gssdp

[Jens Georg <jensgeorg src gnome org>]

commit d88a0c408ff2aff66213006fcab02240643e2661
Author: Jens Georg <mail jensge org>
Date:   Sat Aug 14 10:27:42 2021 +0200

    build: Add fallback option for gssdp

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 2e1722f..545dd01 100644
--- a/meson.build
+++ b/meson.build
@@ -21,7 +21,7 @@ conf.set('GLIB_VERSION_MAX_ALLOWED', 'GLIB_VERSION_' + glib_version.underscorify
 subdir('internal')
 guul = subproject('guul', default_options : ['default_library=static'])
 
-gssdp_dep = dependency('gssdp-1.2', version : '>= 1.3.0', default_options: ['sniffer=false'])
+gssdp_dep = dependency('gssdp-1.2', version : '>= 1.3.0', default_options: ['sniffer=false'], fallback: 
'gssdp-1.2')
 
 gio_unix = dependency('gio-unix-2.0', version: '>= 2.44', required: host_machine.system() != 'windows')