[ruby/csv] Add support for \r\n with skip_lines: /...$/ again

GitHub: fix GH-194

Reported by Josef Šimánek. Thanks!!!

https://github.com/ruby/csv/commit/fd86afe081

lib/csv/parser.rb

@@ -785,6 +785,7 @@ class CSV
     end
 
     def skip_line?(line)
+      line = line.delete_suffix(@row_separator)
       case @skip_lines
       when String
         line.include?(@skip_lines)

test/csv/parse/test_skip_lines.rb

@@ -109,4 +109,10 @@ class TestCSVParseSkipLines < Test::Unit::TestCase
                            :liberal_parsing => true,
                            :skip_lines => /^$/))
   end
+
+  def test_crlf
+    assert_equal([["a", "b"]],
+                 CSV.parse("a,b\r\n,\r\n",
+                           :skip_lines => /^,+$/))
+  end
 end