Use fail_with

modules/exploits/windows/fileformat/vlc_mkv.rb

@@ -115,8 +115,7 @@ class MetasploitModule < Msf::Exploit::Remote
     h = format('%<num>x', num: num)
     s = ('0' * (h.length % 2) + h).rjust(length * 2)
     s = s.scan(/.{2}/).map! { |x| x.hex.chr }.join
-    return s if endianess == 'big'
-    return s.reverse
+    endianess == 'big' ?  s : s.reverse
   end
 
   def data_size(number, numbytes = (1...9))
@@ -126,7 +125,7 @@ class MetasploitModule < Msf::Exploit::Remote
       bits = size * 7
       return to_bytes(((1 << bits) + number), size) if number <= (1 << bits) - 2
     end
-    raise ArgumentError, "Can't store #{number} in #{size} bytes"
+    fail_with(Failure::BadConfig, "Can't store #{number} in #{size} bytes")
   end
 
   def build_data(size)