Rollup merge of #21375 - petrochenkov:ssbsl, r=alexcrichton

After PR #19766 added implicit coersions `*mut T -> *const T`, the explicit casts can be removed.
(The number of such casts turned out to be relatively small).

1 files changed, 1 insertions, 1 deletions

diff --git a/src/liballoc/heap.rs b/src/liballoc/heap.rs
index b7bc1b47646..bd5b43b782e 100644
--- a/src/liballoc/heap.rs
+++ b/src/liballoc/heap.rs
@@ -298,7 +298,7 @@ mod imp {
             libc::realloc(ptr as *mut libc::c_void, size as libc::size_t) as *mut u8
         } else {
             let new_ptr = allocate(size, align);
-            ptr::copy_memory(new_ptr, ptr as *const u8, cmp::min(size, old_size));
+            ptr::copy_memory(new_ptr, ptr, cmp::min(size, old_size));
             deallocate(ptr, old_size, align);
             new_ptr
         }