[PATCH] Fix ext lang calls to value_struct_elt

[Doug Evans <dje@google.com>]

Hi.

I found this while reading the code.

2016-11-03  Doug Evans  <dje@google.com>

	* guile/scm-value.c (gdbscm_value_field): Fix call to value_struct_elt.
	* python/py-value.c (valpy_getitem): Ditto.

diff --git a/gdb/guile/scm-value.c b/gdb/guile/scm-value.c
index 1cdf953..416e488 100644
--- a/gdb/guile/scm-value.c
+++ b/gdb/guile/scm-value.c
@@ -726,7 +726,8 @@ gdbscm_value_field (SCM self, SCM field_scm)
      {
        struct value *tmp = value;

-      res_val = value_struct_elt (&tmp, NULL, field, NULL, NULL);
+      res_val = value_struct_elt (&tmp, NULL, field, NULL,
+				  "struct/class/union");
      }
    CATCH (except, RETURN_MASK_ALL)
      {
diff --git a/gdb/python/py-value.c b/gdb/python/py-value.c
index 46683b8..f8bf17a 100644
--- a/gdb/python/py-value.c
+++ b/gdb/python/py-value.c
@@ -754,7 +754,8 @@ valpy_getitem (PyObject *self, PyObject *key)
        struct value *res_val = NULL;

        if (field)
-	res_val = value_struct_elt (&tmp, NULL, field, 0, NULL);
+	res_val = value_struct_elt (&tmp, NULL, field, NULL,
+				    "struct/class/union");
        else if (bitpos >= 0)
  	res_val = value_struct_elt_bitpos (&tmp, bitpos, field_type,
  					   "struct/class/union");