fix(decompile): safe array access when building abi

[Jon-Becker]

Motivation

Solution

[github-actions]

Benchmark for 391313c

Click to view benchmark

Test	Base	PR	%
heimdall_cfg/complex	14.6±0.07ms	14.0±0.32ms	-4.11%
heimdall_cfg/simple	2.2±0.01ms	2.2±0.01ms	0.00%
heimdall_decoder/seaport	40.2±2.29µs	39.6±2.32µs	-1.49%
heimdall_decoder/transfer	2.9±0.23µs	2.6±0.09µs	-10.34%
heimdall_decoder/uniswap	10.8±0.52µs	10.2±0.60µs	-5.56%
heimdall_decompiler/abi_complex	61.3±0.79ms	58.4±2.27ms	-4.73%
heimdall_decompiler/abi_simple	2.2±0.03ms	2.2±0.01ms	0.00%
heimdall_decompiler/sol_complex	71.7±0.55ms	70.0±1.17ms	-2.37%
heimdall_decompiler/sol_simple	2.6±0.01ms	2.5±0.01ms	-3.85%
heimdall_decompiler/yul_complex	64.6±1.47ms	62.5±2.14ms	-3.25%
heimdall_decompiler/yul_simple	2.3±0.10ms	2.3±0.08ms	0.00%
heimdall_disassembler/complex	980.4±33.88µs	936.1±34.76µs	-4.52%
heimdall_disassembler/simple	47.5±2.90µs	44.6±4.11µs	-6.11%
heimdall_vm/erc20_transfer	342.6±13.83µs	353.8±35.87µs	+3.27%
heimdall_vm/fib	906.3±39.91µs	845.6±52.66µs	-6.70%
heimdall_vm/ten_thousand_hashes	5.1±0.16s	4.9±0.09s	-3.92%

[github-actions]

Benchmark for 90b5223

Click to view benchmark

Test	Base	PR	%
heimdall_cfg/complex	15.6±1.64ms	13.7±1.01ms	-12.18%
heimdall_cfg/simple	2.1±0.02ms	2.0±0.13ms	-4.76%
heimdall_decoder/seaport	32.5±2.00µs	32.4±1.38µs	-0.31%
heimdall_decoder/transfer	3.8±0.23µs	3.6±0.23µs	-5.26%
heimdall_decoder/uniswap	9.9±0.60µs	9.5±0.45µs	-4.04%
heimdall_decompiler/abi_complex	55.8±4.10ms	54.1±3.23ms	-3.05%
heimdall_decompiler/abi_simple	2.1±0.04ms	1945.3±15.75µs	-7.37%
heimdall_decompiler/sol_complex	60.1±1.58ms	63.7±1.06ms	+5.99%
heimdall_decompiler/sol_simple	2.4±0.01ms	2.3±0.03ms	-4.17%
heimdall_decompiler/yul_complex	53.4±1.67ms	56.4±3.29ms	+5.62%
heimdall_decompiler/yul_simple	2.2±0.01ms	2.2±0.04ms	0.00%
heimdall_disassembler/complex	798.4±28.63µs	806.6±28.21µs	+1.03%
heimdall_disassembler/simple	39.9±3.17µs	41.0±1.61µs	+2.76%
heimdall_vm/erc20_transfer	297.5±13.84µs	289.8±10.58µs	-2.59%
heimdall_vm/fib	767.0±12.00µs	710.4±14.37µs	-7.38%
heimdall_vm/ten_thousand_hashes	552.6±39.21ms	553.9±36.44ms	+0.24%