Hopefully last bug in windows timezone handling

[Roland Schwingel]

Hi...

With the last patch to windows timezone handling there was an 
unterminated string introduced.
The funny thing, in 99.999999999999% of the time this works without 
trouble but sometimes
this could lead to a buffer overrun.The attached patch fixes this (it is 
relative to svn trunk)

Thanks for applying,

Roland

--- NSTimeZone.m.orig   2008-01-18 12:49:28.000000000 +0100
+++ NSTimeZone.m        2008-01-18 12:51:46.000000000 +0100
@@ -2177,10 +2177,12 @@
 
        if (cSubKeys && (retCode == ERROR_SUCCESS))
        {
-               wchar_t *wName = malloc(([name length]+1) * sizeof(wchar_t));
+               int wLen = [name length];
+               wchar_t *wName = malloc((wLen+1) * sizeof(wchar_t));
                if (wName)
                {
                        [name getCharacters:wName];
+                               wName[wLen] = L'\0';
 
                                for (i=0; i<cSubKeys && !tzFound; i++) 
                                {