Remove unsafe code

Author: gabriel-araujjo

src/event/data.rs

@@ -91,9 +91,7 @@ impl fmt::Display for Data {
                         Err(e) => {
                             let (good, bad) = slice.split_at(e.valid_up_to());
 
-                            // SAFETY: good is a valid utf8 sequency
-                            f.write_str(unsafe { str::from_utf8_unchecked(good) })?;
-
+                            f.write_str(str::from_utf8(good).unwrap())?;
                             write!(f, "\\x{:02X}", bad[0])?;
                             slice = &bad[1..];
                         }