ntdll: Fix valgrind heap realloc notifications. (try 2)

[Thomas Faller]

Valgrind can't handle a realloc, if the new size is zero.
Fix for bug https://bugs.winehq.org/show_bug.cgi?id=37646

try2:

Set new size to 1 instead of freeing the block.


Signed-off-by: Thomas Faller <tfaller1 at gmx.de>
---
  dlls/ntdll/heap.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)




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