more: constant mem initialization for files and pipes

Cargo.lock

@@ -3031,6 +3031,7 @@ dependencies = [
  "clap",
  "crossterm",
  "nix",
+ "tempfile",
  "unicode-segmentation",
  "unicode-width 0.2.0",
  "uucore",

Cargo.toml

@@ -342,7 +342,6 @@ thiserror = "2.0.3"
 time = { version = "0.3.36" }
 unicode-segmentation = "1.11.0"
 unicode-width = "0.2.0"
-utf-8 = "0.7.6"
 utmp-classic = "0.1.6"
 uutils_term_grid = "0.7"
 walkdir = "2.5"

src/uu/more/Cargo.toml

@@ -33,3 +33,6 @@ crossterm = { workspace = true, features = ["use-dev-tty"] }
 [[bin]]
 name = "more"
 path = "src/main.rs"
+
+[dev-dependencies]
+tempfile = { workspace = true }