avoid Asan runtime error: shift exponent -1 is negative
Summary:
Avoid doing a 1<<-1.
Test Plan:
Before: frameworks/ktexteditor/src/completion/katecompletionconfig.cpp:195:33: runtime error: shift exponent -1 is negative
after: silence
Reviewers: Kate, Frameworks, mwolff
Reviewed By: Kate, mwolff
Subscribers: mwolff, brauch
Tags: Kate, Frameworks
Differential Revision: https://phabricator.kde.org/D11811