Fix/fuzzing errors v50

[lafirest]

Fixes

If your build fails due to your commit message not passing the build checks, please review the guidelines here: https://github.com/emqx/emqx/blob/master/CONTRIBUTING.md.

PR Checklist

Please convert it to a draft if any of the following conditions are not met. Reviewers may skip over until all the items are checked:

• Added tests for the changes
• Changed lines covered in coverage report
• Change log has been added to changes/ dir
• For EMQX 4.x: appup files updated (execute scripts/update-appup.sh emqx)
• For internal contributor: there is a jira ticket to track this change
  EMQX-8305
• If there should be document changes, a PR to emqx-docs.git is sent, or a jira ticket is created to follow up
• In case of non-backward compatible changes, reviewer should check this item as a write-off, and add details in Backward Compatibility section

Backward Compatibility

More information

[coveralls]

Pull Request Test Coverage Report for Build 3621395603

• 33 of 40 (82.5%) changed or added relevant lines in 1 file are covered.
• 28 unchanged lines in 11 files lost coverage.
• Overall coverage increased (+0.06%) to 78.382%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
apps/emqx/src/emqx_frame.erl	33	40	82.5%

Files with Coverage Reduction	New Missed Lines	%
apps/emqx_management/src/emqx_mgmt_util.erl	1	13.79%
apps/emqx_bridge/src/emqx_bridge.erl	1	85.11%
apps/emqx/src/emqx_os_mon.erl	1	82.61%
apps/emqx_machine/src/emqx_machine.erl	1	79.31%
apps/emqx_dashboard/src/emqx_dashboard_monitor.erl	1	69.44%
apps/emqx/src/emqx_packet.erl	1	85.88%
apps/emqx/src/emqx_frame.erl	2	87.25%
apps/emqx_resource/src/emqx_resource_manager.erl	2	87.75%
apps/emqx/src/emqx_broker.erl	4	82.97%
apps/emqx/src/emqx_ws_connection.erl	4	79.56%

Totals
Change from base Build 3619938324:	0.06%
Covered Lines:	21044
Relevant Lines:	26848

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💛 - Coveralls