[BUG] fix some extra memory in bitmap operate

[stdpain]

Proposed changes

will close #5855
may fix #5849 problem 1

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Checklist

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• I have created an issue on (Fix [BUG] extra memory copy in bitmap operate #5855 ) and described the bug/feature there in detail
• Compiling and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• If these changes need document changes, I have updated the document
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Further comments

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[yangzhg]

LGTM

[HappenLee]

use auto，do not use type