Fix rubocop: Layout/EmptyLineAfterGuardClause

Addressing:
C: Layout/EmptyLineAfterGuardClause: Add empty line after guard clause.
        return nil if html_p.null?
        ^^^^^^^^^^^^^^^^^^^^^^^^^^

Author: isimluk

lib/openscap/ds/arf.rb

@@ -48,6 +48,7 @@ def html
         html_p = OpenSCAP.ds_rds_session_get_html_report @session
         OpenSCAP.raise! if OpenSCAP.error?
         return nil if html_p.null?
+
         html = html_p.read_string
         OpenSCAP::LibC.free html_p
         html

lib/openscap/xccdf/fix.rb

@@ -6,6 +6,7 @@ class Fix
       def initialize(raw)
         raise OpenSCAP::OpenSCAPError, "Cannot initialize #{self.class.name} with '#{raw}'" \
           unless raw.is_a?(FFI::Pointer)
+
         @raw = raw
       end
 

lib/openscap/xccdf/ident.rb

@@ -6,6 +6,7 @@ class Ident
       def initialize(raw)
         raise OpenSCAP::OpenSCAPError, "Cannot initialize #{self.class.name} with '#{raw}'" \
           unless raw.is_a?(FFI::Pointer)
+
         @raw = raw
       end
 

lib/openscap/xccdf/item.rb

@@ -12,6 +12,7 @@ class Item
       def self.build(t)
         raise OpenSCAP::OpenSCAPError, "Cannot initialize #{self.class.name} with #{t}" \
           unless t.is_a?(FFI::Pointer)
+
         # This is Abstract base class that enables you to build its child
         case OpenSCAP.xccdf_item_get_type t
         when :group
@@ -27,6 +28,7 @@ def initialize(t)
         if self.class == OpenSCAP::Xccdf::Item
           raise OpenSCAP::OpenSCAPError, "Cannot initialize #{self.class.name} abstract base class."
         end
+
         @raw = t
       end
 

lib/openscap/xccdf/reference.rb

@@ -6,6 +6,7 @@ class Reference
       def initialize(raw)
         raise OpenSCAP::OpenSCAPError, "Cannot initialize #{self.class.name} with '#{raw}'" \
           unless raw.is_a?(FFI::Pointer)
+
         @raw = raw
       end
 

lib/openscap/xccdf/session.rb

@@ -5,6 +5,7 @@ module Xccdf
     class Session
       def initialize(input_filename)
         raise OpenSCAPError, 'No filename specified!' unless input_filename
+
         @input_filename = input_filename
         @s = OpenSCAP.xccdf_session_new(input_filename)
         OpenSCAP.raise! if @s.null?