Add a missing includemissing-include

This was breaking the build on some macOs versions.

Fixes: #640

1 files changed, 1 insertions, 0 deletions

diff --git a/pango/json/gtkjsonparser.c b/pango/json/gtkjsonparser.c
index 10985bb2..0599d8f1 100644
--- a/pango/json/gtkjsonparser.c
+++ b/pango/json/gtkjsonparser.c
@@ -22,6 +22,7 @@
 
 #include "gtkjsonparserprivate.h"
 #include <stdlib.h>
+#include <errno.h>
 
 typedef struct _GtkJsonBlock GtkJsonBlock;