Fix issue: Params in multiple condition of one task will be overwrite

[vincent-pli]

More details please check the appennd issue, thanks
#1619

The range loop in golang will only allocated once at the beginning of the for loop.
so if assign the pointer to another object, will be the same address, and overwrite occurred.

Changes

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[tekton-robot]

The following is the coverage report on pkg/.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/reconciler/pipelinerun/resources/pipelinerunresolution.go	94.6%	94.7%	0.0

[dibyom]

Nice catch @vincent-pli

LGTM, but would you mind adding a test case?

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dibyom

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[afrittoli]

Thanks a lot for this!
I agree with @dibyom it would be good to have tests for this!

[tekton-robot]

The following is the coverage report on pkg/.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/reconciler/pipelinerun/resources/pipelinerunresolution.go	94.6%	94.7%	0.0

[vincent-pli]

Test added, thanks

[vdemeester]

/lgtm