pcsc pinpad support (part 5)

[NIIBE Yutaka]

Here is the part 5, fixing a bug introduced in part 4.

I test part 1 to part 5 with Gnuk version 0.8, which is about to
be released.

Please test and report the result.  Note that PIN modification
is only supported for OpenPGP card verion 2.

---
 scd/app-openpgp.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/scd/app-openpgp.c b/scd/app-openpgp.c
index 48af0ca..18c56f2 100644
--- a/scd/app-openpgp.c
+++ b/scd/app-openpgp.c
@@ -1903,7 +1903,7 @@ do_change_pin (app_t app, ctrl_t ctrl,  const char *chvnostr,
   int chvno = atoi (chvnostr);
   char *resetcode = NULL;
   char *oldpinvalue = NULL;
-  char *pinvalue;
+  char *pinvalue = NULL;
   int reset_mode = !!(flags & APP_CHANGE_FLAG_RESET);
   int set_resetcode = 0;
   iso7816_pininfo_t pininfo;
-- 
1.7.2.3