ntdll: Heap handles should be 64K-aligned.

dlls/kernel32/tests/alloc.c

@@ -69,6 +69,7 @@ static void test_Heap(void)
 */
     memchunk=10*sysInfo.dwPageSize;
     heap=HeapCreate(0,2*memchunk,5*memchunk);
+    ok( !((ULONG_PTR)heap & 0xffff), "heap %p not 64K aligned\n", heap );
 
 /* Check that HeapCreate allocated the right amount of ram */
     mem1=HeapAlloc(heap,0,5*memchunk+1);

dlls/ntdll/heap.c

@@ -879,7 +879,7 @@ static SUBHEAP *HEAP_CreateSubHeap( HEAP *heap, LPVOID address, DWORD flags,
         commitSize = min( totalSize, (commitSize + COMMIT_MASK) & ~COMMIT_MASK );
 
         /* allocate the memory block */
-        if (NtAllocateVirtualMemory( NtCurrentProcess(), &address, 5, &totalSize,
+        if (NtAllocateVirtualMemory( NtCurrentProcess(), &address, 0, &totalSize,
                                      MEM_RESERVE, get_protection_type( flags ) ))
         {
             WARN("Could not allocate %08lx bytes\n", totalSize );