Fix panic while fuzzing #371

[Licenser]

@CleveGreen thanks for the report, this should resolve the crash in the fuzzer.

Also clean up some clippy warnings

[github-actions]

Benchmark for 95c7644

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Test	Base	PR	%
apache_builds/simd_json::to_tape_with_buffers	93.4±1.68µs	92.8±2.05µs	-0.64%
canada/simd_json::to_tape_with_buffers	3.7±0.13ms	3.7±0.16ms	0.00%
citm_catalog/simd_json::to_tape_with_buffers	1141.1±78.79µs	1125.7±76.22µs	-1.35%
event_stacktrace_10kb/simd_json::to_tape_with_buffers	4.0±0.28µs	4.0±0.25µs	0.00%
github_events/simd_json::to_tape_with_buffers	41.4±1.22µs	40.9±0.96µs	-1.21%
log/simd_json::to_tape_with_buffers	1624.7±96.24ns	1597.3±84.79ns	-1.69%
twitter/simd_json::to_tape_with_buffers	451.3±28.23µs	446.5±26.24µs	-1.06%

[github-actions]

Benchmark for fd3a0df

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Test	Base	PR	%
apache_builds/simd_json::to_tape_with_buffers	92.4±3.81µs	93.5±1.76µs	+1.19%
canada/simd_json::to_tape_with_buffers	3.6±0.16ms	3.8±0.15ms	+5.56%
citm_catalog/simd_json::to_tape_with_buffers	1123.4±82.46µs	1122.9±83.20µs	-0.04%
event_stacktrace_10kb/simd_json::to_tape_with_buffers	3.8±0.24µs	3.8±0.28µs	0.00%
github_events/simd_json::to_tape_with_buffers	40.8±1.26µs	41.1±1.01µs	+0.74%
log/simd_json::to_tape_with_buffers	1581.1±101.49ns	1599.4±104.46ns	+1.16%
twitter/simd_json::to_tape_with_buffers	437.9±26.49µs	438.4±28.70µs	+0.11%

[github-actions]

Benchmark for d706699

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Test	Base	PR	%
apache_builds/simd_json::to_tape_with_buffers	91.7±2.58µs	92.8±2.06µs	+1.20%
canada/simd_json::to_tape_with_buffers	3.7±0.16ms	3.6±0.16ms	-2.70%
citm_catalog/simd_json::to_tape_with_buffers	1142.1±91.58µs	1131.8±84.11µs	-0.90%
event_stacktrace_10kb/simd_json::to_tape_with_buffers	3.9±0.27µs	3.9±0.33µs	0.00%
github_events/simd_json::to_tape_with_buffers	41.0±2.21µs	41.1±1.45µs	+0.24%
log/simd_json::to_tape_with_buffers	1593.0±109.38ns	1631.5±107.77ns	+2.42%
twitter/simd_json::to_tape_with_buffers	451.0±30.68µs	453.2±28.07µs	+0.49%