fix: divde by zero for decom status

[jiuker]

Community Contribution License

All community contributions in this pull request are licensed to the project maintainers
under the terms of the Apache 2 license.
By creating this pull request I represent that I have the right to license the
contributions to the project maintainers under the Apache 2 license.

Description

package main

import "fmt"

func main() {
	usedCurrent := 0
	totalSize := 0
	capacity := fmt.Sprintf("%.1f%% (total: 0B)", 100*float64(usedCurrent)/float64(totalSize))
	fmt.Println(capacity)
}

shows

NaN% (total: 0B)

fix minio/minio#19545

Motivation and Context

How to test this PR?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Optimization (provides speedup with no functional changes)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• Fixes a regression (If yes, please add commit-id or PR # here)
• Unit tests added/updated
• Internal documentation updated
• Create a documentation update request here

[shtripat]

lgtm

[klauspost]

Though the underlying problem should also be fixed.

[vadmeste]

LGTM

[harshavardhana]

Though the underlying problem should also be fixed.

yeah the underlying problem is fixed in the minio master