Revert "fix #19600 No error checking on fclose (#19836)"

[ringabout]

This reverts commit 04e4a5e.

The PR doesn't pass CI when it was merged. It passes later because all platforms are disabled in #20287

2022-08-29T16:29:58.5667562Z �[31mFAIL: �[36mtests/misc/t19600.nim c                                     �[34m ( 1.08 sec)�[0m
2022-08-29T16:29:58.5668370Z �[1m�[36mTest "tests/misc/t19600.nim" in category "misc"�[0m
2022-08-29T16:29:58.5669082Z �[1m�[31mFailure: reExitcodesDiffer�[0m
2022-08-29T16:29:58.5669720Z �[33mExpected:�[0m
2022-08-29T16:29:58.5670316Z �[1mexitcode: 1
2022-08-29T16:29:58.5670857Z �[0m
2022-08-29T16:29:58.5671423Z �[33mGotten:�[0m
2022-08-29T16:29:58.5672018Z �[1mexitcode: 0
2022-08-29T16:29:58.5672327Z 
2022-08-29T16:29:58.5672734Z Output:
2022-08-29T16:29:58.5673008Z 
2022-08-29T16:29:58.5673503Z �[0m

ref https://github.com/nim-lang/Nim/runs/8076466640

[github-actions]

Thanks for your hard work on this PR!
The lines below are statistics of the Nim compiler built from 5ff06fd

Hint: mm: orc; threads: on; opt: speed; options: -d:release
163962 lines; 13.564s; 842.188MiB peakmem