msvcrt: dont overlap in strcpy (valgrind)

[André Hentschel]

here is a case where valgrind claims about "Source and destination overlap in strcpy".
this is a proposal for a safer string moving.
see also http://kegel.com/wine/valgrind/logs/2009-10-26-08.26/vg-msvcrt_printf.txt

---
 dlls/msvcrt/math.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index 010e1a6..bf5194b 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -856,7 +856,10 @@ char * CDECL _ecvt( double number, int ndigits, int *decpt, int *sign )
     snprintf(data->efcvt_buffer, 80, "%.*le", prec - 1, number);
     /* take the decimal "point away */
     if( prec != 1)
-        strcpy( data->efcvt_buffer + 1, data->efcvt_buffer + 2);
+        {
+            char *src = data->efcvt_buffer + 2, *dest = data->efcvt_buffer + 1;
+            while ((*dest++=*src++) != 0);
+        }
     /* take the exponential "e" out */
     data->efcvt_buffer[ prec] = '\0';
     /* read the exponent */
-- 

Best Regards, André Hentschel