[gnome-builder] jsonrpc: protect against pushing past the stack size

[Sébastien Lafargue <slafargue src gnome org>]

commit 27edead176504234e2abdb182f5b0609106a722b
Author: Sebastien Lafargue <slafargue gnome org>
Date:   Mon Nov 7 12:00:31 2016 +0100

    jsonrpc: protect against pushing past the stack size

 contrib/jsonrpc-glib/jcon.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/contrib/jsonrpc-glib/jcon.c b/contrib/jsonrpc-glib/jcon.c
index f771778..a9586e3 100644
--- a/contrib/jsonrpc-glib/jcon.c
+++ b/contrib/jsonrpc-glib/jcon.c
@@ -572,7 +572,7 @@ jcon_extract_va_list (JsonNode *node,
   keys[0] = NULL;
   indexes[0] = 0;
 
-  while (node != NULL && sp >= 0 && sp < STACK_DEPTH)
+  while (node != NULL && sp >= 0 && sp < STACK_DEPTH - 1)
     {
       JconExtract val = { 0 };
       JconType type;