[libsoup/issue-171] meson: do not build with c89

[Ignacio Casal Quinteiro <icq src gnome org>]

commit c770003ed181e3235a65a52d4b05aebd7635e516
Author: Ignacio Casal Quinteiro <qignacio amazon com>
Date:   Thu Sep 26 12:10:07 2019 +0200

    meson: do not build with c89
    
    This makes the build to fail on centos 6
    
    Fixes #171

 meson.build | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/meson.build b/meson.build
index dd30e66c..69f70641 100644
--- a/meson.build
+++ b/meson.build
@@ -1,8 +1,7 @@
 project('libsoup', 'c',
         version: '2.68.1',
         meson_version : '>=0.50',
-        license : 'LGPL2',
-        default_options : 'c_std=c89')
+        license : 'LGPL2')
 
 gnome = import('gnome')