[PATCH 4/4] ntdll: Remove an unnecessary cast.

[Zebediah Figura]

From: Zebediah Figura

---
 dlls/ntdll/heap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ntdll/heap.c b/dlls/ntdll/heap.c
index fd761215c5a..048fc0e5264 100644
--- a/dlls/ntdll/heap.c
+++ b/dlls/ntdll/heap.c
@@ -1099,7 +1099,7 @@ static BOOL validate_free_block( const struct heap *heap, const SUBHEAP *subheap
         err = "invalid previous free block pointer";
     else if (!(block_get_flags( prev ) & BLOCK_FLAG_FREE) || block_get_type( prev ) != BLOCK_TYPE_FREE)
         err = "invalid previous free block header";
-    else if ((next = next_block( subheap, (struct block *)block )))
+    else if ((next = next_block( subheap, block )))
     {
         if (!(block_get_flags( next ) & BLOCK_FLAG_PREV_FREE))
             err = "invalid next block flags";