Cygwin: smallprint.cc: Drop HEAP_ZERO_MEMORY

Leftover from testing.

Reported-by: Noel Grandin <noelgrandin@gmail.com>
Fixes: 07ec40170a ("Cygwin: smallprint.cc: Convert tmpbuf to lockless")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

winsup/cygwin/smallprint.cc

@@ -62,7 +62,7 @@ public:
   operator WCHAR * ()
   {
     if (!buf)
-      buf = (PWCHAR) HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY,
+      buf = (PWCHAR) HeapAlloc (GetProcessHeap (), 0,
 				NT_MAX_PATH * sizeof (WCHAR));
     return buf;
   }