[gcalctool] fix memcpy regression

[Robert Ancell <rancell src gnome org>]

commit 180ab6da3db9e489f125eff00203825d2a487b10
Author: Robert Ancell <robert ancell gmail com>
Date:   Tue May 19 12:23:33 2009 +0200

    fix memcpy regression
---
 src/mp-convert.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mp-convert.c b/src/mp-convert.c
index f9c2f37..c54e1ca 100644
--- a/src/mp-convert.c
+++ b/src/mp-convert.c
@@ -44,7 +44,7 @@ mp_set_from_mp(const MPNumber *x, MPNumber *y)
     if (x->sign == 0)
         y->sign = 0;
     else
-        memcpy (y, x, MP.t * sizeof(int));
+        memcpy (y, x, (MP.t + 2) * sizeof(int));
 }
 
 /*  CONVERTS SINGLE-PRECISION NUMBER RX TO MULTIPLE-PRECISION Z.