rust: bssl-tls: Clean up all slice_from_raw_parts

I forgot about this macro and I did not check it.

Signed-off-by: Xiangfei Ding <xfding@google.com>
Change-Id: I39957db647c88265ed91433974b56df26a6a6964
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/100107
Reviewed-by: Rudolf Polzer <rpolzer@google.com>

rust/bssl-tls/src/macros.rs

diff --git a/rust/bssl-tls/src/macros.rs b/rust/bssl-tls/src/macros.rs
index d9fb5ae..3b6a19a 100644
--- a/rust/bssl-tls/src/macros.rs
+++ b/rust/bssl-tls/src/macros.rs
@@ -94,14 +94,13 @@
                     )
                 };
                 if data.is_null() || len == 0 || len > isize::MAX as usize {
-                    &[]
-                } else {
-                    unsafe {
-                        // Safety:
-                        // - `data` is 1-size and 1-align and `len` is valid by BoringSSL invariant.
-                        // - `len` is sanitised to be within bound.
-                        ::core::slice::from_raw_parts(data, len)
-                    }
+                    return &[]
+                }
+                unsafe {
+                    // Safety:
+                    // - `data` is 1-size and 1-align and `len` is valid by BoringSSL invariant.
+                    // - `len` is sanitised to be within bound.
+                    $crate::ffi::sanitize_slice(data, len).unwrap_or(&[])
                 }
             }
         }