[libsoup] meson: Define check_gio_tls_src conditionally

[Iñigo Martínez <inigomartinez src gnome org>]

commit 31a332fbc9e4bcf147411ba756d14ff2b4906805
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Fri Apr 13 10:07:35 2018 +0200

    meson: Define check_gio_tls_src conditionally
    
    The `check_gio_tls_src` which contains the source code to test if
    the backend has TLs support should only be defined if `tls_check`
    is enabled.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=795233

 meson.build |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/meson.build b/meson.build
index 7b004f3..a95e543 100644
--- a/meson.build
+++ b/meson.build
@@ -84,14 +84,14 @@ libpsl_dep = dependency('libpsl', version : libpsl_required_version)
 ###################
 # GIO TLS support #
 ###################
-check_gio_tls_src = '''#include <gio/gio.h>
-int main(void) {
-  return !g_tls_backend_supports_tls (g_tls_backend_get_default ());
-}
-'''
-
 enable_tls_check = get_option('tls_check')
 if enable_tls_check
+  check_gio_tls_src = '''#include <gio/gio.h>
+  int main(void) {
+    return !g_tls_backend_supports_tls (g_tls_backend_get_default ());
+  }
+  '''
+
   assert(cc.compiles(check_gio_tls_src, name : 'GIO has real TLS support', dependencies : glib_dep),
          'libsoup requires glib-networking or glib-openssl for TLS support')
 endif