Fix clippy::format_collect lint

See
https://rust-lang.github.io/rust-clippy/stable/index.html#/format_collect

1 files changed, 5 insertions, 1 deletions

diff --git a/wpa-psk/src/lib.rs b/wpa-psk/src/lib.rs
index d0ffbc4..b16186f 100644
--- a/wpa-psk/src/lib.rs
+++ b/wpa-psk/src/lib.rs
@@ -155,7 +155,11 @@ pub fn wpa_psk_unchecked(ssid: &[u8], passphrase: &[u8]) -> [u8; 32] {
 
 /// Returns the hexdecimal representation of the given bytes.
 pub fn bytes_to_hex(bytes: &[u8]) -> String {
-    bytes.iter().map(|b| format!("{b:02x}")).collect()
+    use std::fmt::Write;
+    bytes.iter().fold(String::new(), |mut acc, b| {
+        let _ = write!(acc, "{b:02x}");
+        acc
+    })
 }
 
 #[cfg(test)]