Call super in Formatter.close methods to ensure sync is reset #1207

Job	Run time
Rubocop	27s
Ruby 2.7 (Windows)	4m 15s
Ruby 2.6 (Windows)	3m 14s
Legacy Ruby Builds (2.1.9)	41s
Ruby 2.5 (Windows)	3m 23s
Legacy Ruby Builds (2.0)	48s
Ruby 3.3	4m 14s
Ruby 2.4 (Windows)	3m 20s
Legacy Ruby Builds (1.9.3)	56s
Ruby 3.2	3m 55s
Ruby 2.3 (Windows)	3m 10s
Legacy Ruby Builds (1.9.2)	2m 20s
Ruby 3.1	3m 53s
Ruby 2.2 (Windows)	3m 9s
Legacy Ruby Builds (1.8.7)	1m 11s
Ruby 3.0	2m 46s
Legacy Ruby Builds (REE)	1m 18s
Ruby 2.7	57s
Legacy Ruby Builds (JRuby 1.7)	1m 5s
Ruby 2.6	55s
Legacy Ruby Builds (JRuby 1.7 1.8 mode)	1m 6s
Ruby 2.5	54s
Legacy Ruby Builds (JRuby 9.1.17.0)	1m 14s
Ruby 2.4	49s
Ruby 2.3	58s
Ruby 2.2	1m 13s
Ruby ruby-head	38s
Ruby jruby-9.2.13.0	2m 46s
Ruby 2.7 with diff-lcs 1.3	57s
Ruby 2.7 with diff-lcs 1.4.3	55s
	57m 27s

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