theme/powerline: fix error scm: parameter not defined
#2021
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Fix bug that powerline theme's scm feature does not work.
Description
The commit 2991aa6 removed set +u
but still references the variable
scm
without defining it.This commit remove the reference to
scm
.Motivation and Context
This makes powerline theme's scm feature work again.
How Has This Been Tested?
Screenshots (if appropriate):
Types of changes
Checklist:
clean_files.txt
and formatted it usinglint_clean_files.sh
.