Struct#pretty_print strip blank lines (#3)

* Struct#pretty_print strip blank lines

The previous fix resolved the error during inspect, but left blank lines
in the output for pad fields.  This commit removes those blank lines.

---------

Co-authored-by: David M. Lary <[email protected]>

Author: dmlary

lib/ctypes/struct.rb

@@ -512,8 +512,11 @@ def pretty_print(q) # :nodoc:
         "struct {"
       end
       q.group(4, open, "}") do
-        q.seplist(self.class.field_layout, -> { q.breakable("") }) do |name, _|
-          names = name.is_a?(::Array) ? name : [name]
+        # strip out pad fields
+        fields = self.class.field_layout.reject do |(_, type)|
+          type.is_a?(CTypes::Pad)
+        end
+        q.seplist(fields, -> { q.breakable("") }) do |name, _|
           names.each do |name|
             next if name.is_a?(CTypes::Pad)
             q.text(".#{name} = ")

lib/ctypes/version.rb

@@ -4,5 +4,5 @@
 # SPDX-License-Identifier: MIT
 
 module CTypes
-  VERSION = "0.2.2"
+  VERSION = "0.2.3"
 end