Apply suggestions from code review

Co-authored-by: Carlo Cabrera <[email protected]>

Formula/n/netatalk.rb

@@ -31,6 +31,7 @@ class Netatalk < Formula
   def install
     args = [
       "-Dwith-afpstats=false",
+      "-Dwith-appletalk=#{OS.linux?}",
       "-Dwith-bdb-path=#{Formula["berkeley-db"].opt_prefix}",
       "-Dwith-docbook-path=#{Formula["docbook-xsl"].opt_prefix}/docbook-xsl",
       "-Dwith-init-style=none",
@@ -39,8 +40,6 @@ def install
       "-Dwith-spotlight=false",
     ]
 
-    args << "-Dwith-appletalk=#{OS.linux?}"
-
     system "meson", "setup", "build", *args, *std_meson_args
     system "meson", "compile", "-C", "build", "--verbose"
     system "meson", "install", "-C", "build"
@@ -49,6 +48,6 @@ def install
   test do
     system sbin/"netatalk", "-V"
     system sbin/"afpd", "-V"
-    assert_equal 0, shell_output("#{sbin}/netatalk").strip.length
+    assert_empty shell_output(sbin/"netatalk")
   end
 end