[PATCH net-next] rust: netlink: remove unnecessary bitfield transmutes

[Thorsten Blum <blum@kernel.org>]

Use __BindgenBitfieldUnit::new() to build the bitfield.

Since the generated type implements PartialEq, compare the bitfields
directly in test_family_flags_bitfield().

Signed-off-by: Thorsten Blum <blum@kernel.org>
---
test_family_flags_bitfield() still passes.

 rust/kernel/net/netlink.rs | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/rust/kernel/net/netlink.rs b/rust/kernel/net/netlink.rs
index 2f8733a694a9..d0c79a254f12 100644
--- a/rust/kernel/net/netlink.rs
+++ b/rust/kernel/net/netlink.rs
@@ -180,8 +180,7 @@ impl FamilyFlags {
         }
         // Convert from little endian to the target's endianness.
         bits = u8::from_le(bits);
-        // SAFETY: This bitfield is represented as an u8.
-        unsafe { core::mem::transmute::<u8, bindings::__BindgenBitfieldUnit<[u8; 1]>>(bits) }
+        bindings::__BindgenBitfieldUnit::new([bits])
     }
 }
 
@@ -335,11 +334,7 @@ fn test_family_flags_bitfield() {
                 }
                 .into_bitfield();
 
-                // SAFETY: The bit field is stored as u8.
-                let b_val: u8 = unsafe { core::mem::transmute(b_fam._bitfield_1) };
-                // SAFETY: The bit field is stored as u8.
-                let c_val: u8 = unsafe { core::mem::transmute(c_bitfield) };
-                assert_eq!(b_val, c_val);
+                assert_eq!(b_fam._bitfield_1, c_bitfield);
             }
         }
     }