When using the vsnprintf() implementation, '\0'-terminate the resulting

1999-04-20  Havoc Pennington  <hp@pobox.com>

	* gutils.c (g_vsnprintf):  When using the vsnprintf()
		implementation, '\0'-terminate the resulting string
			and return its length rather than -1.

gutils.c

@@ -175,6 +175,12 @@ g_vsnprintf (gchar	 *str,
   
   retval = vsnprintf (str, n, fmt, args);
   
+  if (retval < 0)
+    {
+      str[n-1] = '\0';
+      retval = strlen (str);
+    }
+
   return retval;
 #else	/* !HAVE_VSNPRINTF */
   gchar *printed;