Remove unsafe code

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "postscript"
-version = "0.18.1"
+version = "0.18.2"
 edition = "2021"
 license = "Apache-2.0/MIT"
 authors = ["Ivan Ukhov <ivan.ukhov@gmail.com>"]
@@ -14,7 +14,7 @@ keywords = ["font", "postscript", "typeface", "typography"]
 exclude = ["tests/fixtures/*"]
 
 [dependencies]
-typeface = "0.4.0"
+typeface = "0.4.2"
 
 [dev-dependencies]
 random = "0.12"

src/compact1/offset.rs

@@ -11,16 +11,12 @@ impl crate::walue::Read<'static> for Offset {
     type Parameter = OffsetSize;
 
     fn read<T: crate::tape::Read>(tape: &mut T, size: OffsetSize) -> Result<Self> {
-        #[cfg(target_endian = "big")]
-        macro_rules! assemble(($hi:expr, $me:expr, $lo:expr) => ([0, $hi, $me, $lo]));
-        #[cfg(target_endian = "little")]
-        macro_rules! assemble(($hi:expr, $me:expr, $lo:expr) => ([$lo, $me, $hi, 0]));
         Ok(Offset(match size {
             1 => tape.take::<u8>()? as u32,
             2 => tape.take::<u16>()? as u32,
             3 => {
-                let trio: [u8; 3] = tape.take()?;
-                unsafe { std::mem::transmute::<_, u32>(assemble!(trio[0], trio[1], trio[2])) }
+                let value: [u8; 3] = tape.take()?;
+                u32::from_be_bytes([0, value[0], value[1], value[2]])
             }
             4 => tape.take::<u32>()?,
             _ => raise!("found a malformed offset"),