Fix handling of file open error during parallel

[vearutop]

No description provided.

[github-actions]

Lines Of Code

Language	Files	Lines	Code	Comments	Blanks	Complexity	Bytes
Go	5	1088 (+38)	829 (+32)	34	225 (+6)	219 (+18)	23.3K (+957B)
YAML	7	509 (+3)	437 (+3)	33	39	0	17K (+39B)

[github-actions]

Go API Changes

# summary
Inferred base version: v0.3.9
Suggested version: v0.3.10

[github-actions]

Unit Test Coverage

total: (statements) 37.1%
changed lines: (statements) 72.2%, coverage is less than 90.0%, consider testing the changes more thoroughly

Coverage of changed lines

File	Function	Coverage
Total		72.2%
cmd/catp/catp/app.go		72.2%
cmd/catp/catp/app.go:250	cat	97.0%
cmd/catp/catp/app.go:409	Main	47.1%
cmd/catp/catp/app.go:62	st	30.0%
cmd/catp/catp/app.go:142	readFile	0.0%

Coverage diff with base branch

File	Function	Base Coverage	Current Coverage
Total		37.5%	37.1% (-0.4%)
cmd/catp/catp/app.go	Main	50.4%	49.2% (-1.2%)
cmd/catp/catp/app.go	cat	71.4%	71.7% (+0.3%)
cmd/catp/catp/app.go	readFile	no function	0.0%
cmd/catp/catp/app.go	st	64.5%	60.0% (-4.5%)