[recipes] Fallback to metric if non-standard _NL_MEASUREMENT_MEASUREMENT isn't defined

[Matthias Clasen <matthiasc src gnome org>]

commit c4640281d2a31b27ce026137cea2e1666015c40b
Author: Jasper Lievisse Adriaanse <jasper humppa nl>
Date:   Sat May 27 17:41:42 2017 +0200

    Fallback to metric if non-standard _NL_MEASUREMENT_MEASUREMENT isn't defined
    
    Fixes #783153

 src/gr-recipe-formatter.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/gr-recipe-formatter.c b/src/gr-recipe-formatter.c
index 0299562..1b07eb0 100644
--- a/src/gr-recipe-formatter.c
+++ b/src/gr-recipe-formatter.c
@@ -48,12 +48,14 @@ get_temperature_unit (void)
         GSettings *settings = gr_settings_get ();
         unit =  g_settings_get_enum (settings, "temperature-unit");
         if (unit == GR_TEMPERATURE_UNIT_LOCALE) {
+#ifdef _NL_MEASUREMENT_MEASUREMENT
                 const gchar *fmt;
 
                 fmt = nl_langinfo (_NL_MEASUREMENT_MEASUREMENT);
                 if (fmt && *fmt == 2)
                         unit = GR_TEMPERATURE_UNIT_FAHRENHEIT;
                 else
+#endif
                         unit = GR_TEMPERATURE_UNIT_CELSIUS;
         }