Clean up the if.nils?

lib/msf/core/post/windows/ldap.rb

@@ -184,7 +184,7 @@ module LDAP
         values = get_values_from_ber(ber, field)
 
         values_result = ""
-        values_result = values.join(',') unless values.nil?
+        values_result = values.join(',') if values
         vprint_status("Values #{values}")
 
         field_results << values_result
@@ -235,7 +235,7 @@ module LDAP
   def get_values_from_ber(ber_data, field)
     field_offset = ber_data.index(field)
 
-    if field_offset.nil?
+    unless field_offset
       vprint_status("Field not found in BER: #{field}")
       return nil
     end

modules/post/windows/gather/enum_ad_computers.rb

@@ -63,9 +63,7 @@ class Metasploit3 < Msf::Post
     max_search = datastore['MAX_SEARCH']
     q = query(search_filter, max_search, fields)
 
-    if q.nil? or q[:results].empty?
-      return
-    end
+    return if q.nil? or q[:results].empty?
 
     # Results table holds raw string data
     results_table = Rex::Ui::Text::Table.new(