vcpkg/ports/libepoxy/libepoxy-1.5.4_meson_c_std.patch

--- a/meson.build	2019-11-06 00:08:06.000000000 +0100
+++ b/meson.build	2020-11-03 20:02:08.201459200 +0100
@@ -1,7 +1,7 @@
 project('libepoxy', 'c', version: '1.5.4',
         default_options: [
           'buildtype=debugoptimized',
-          'c_std=gnu99',
+          'c_std=c99',
           'warning_level=1',
         ],
         license: 'MIT',