fs/procfs: fix integer to pointer cast warning in do_procmap_query()

On 32-bit architectures compiler will complain about casting __u64 to void * pointer:

fs/proc/task_mmu.c: In function 'do_procmap_query':
fs/proc/task_mmu.c:598:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
598 | if (karg.vma_name_size && copy_to_user((void __user *)karg.vma_name_addr,
| ^
fs/proc/task_mmu.c:605:48: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
605 | if (karg.build_id_size && copy_to_user((void __user *)karg.build_id_addr,
| ^

Fix this by adding intermediate cast to uintptr_t.

---
 fs/proc/task_mmu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index d99a390a0f41..e11d6197cef5 100644
@@ -595,14 +595,14 @@ static int do_procmap_query(struct proc_maps_private *priv, void __user *uarg)
 	query_vma_teardown(mm, vma);
 	mmput(mm);
 
-	if (karg.vma_name_size && copy_to_user((void __user *)karg.vma_name_addr,
+	if (karg.vma_name_size && copy_to_user((void __user *)(uintptr_t)karg.vma_name_addr,
 					       name, karg.vma_name_size)) {
 		kfree(name_buf);
 		return -EFAULT;
 	}
 	kfree(name_buf);
 
-	if (karg.build_id_size && copy_to_user((void __user *)karg.build_id_addr,
+	if (karg.build_id_size && copy_to_user((void __user *)(uintptr_t)karg.build_id_addr,
 					       build_id_buf, karg.build_id_size))
 		return -EFAULT;
 

2.43.0