Fix potential issues with `OpenSL`. #20

Job	Run time
📊 Static checks / Code style, file formatting, and docs	1m 3s
🍏 iOS / Template (target=template_release)	10m 23s
🍎 macOS / Editor (target=editor, tests=yes)	31m 21s
🤖 Android / Template (target=template_release)	29m 54s
🍎 macOS / Template (target=template_release)	23m 59s
🐧 Linux / Editor w/ Mono (target=editor)	39m 22s
🐧 Linux / Editor with doubles and GCC sanitizers (target=editor, tests=yes, dev_build=yes, scu_build=yes, precision=double, use_asan=yes, use_ubsan=yes, linker=gold)	49m 33s
🌐 Web / Template w/ threads (target=template_release, threads=yes)	24m 39s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	35m 45s
🌐 Web / Template w/o threads (target=template_release, threads=no)	24m 58s
🏁 Windows / Editor (target=editor, tests=yes)	47m 53s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	31m 22s
🏁 Windows / Template (target=template_release)	33m 29s
🐧 Linux / Template w/ Mono (target=template_release)	25m 22s
🐧 Linux / Minimal template (target=template_release, everything disabled)	15m 9s
🪲 Godot CPP / Build and test Godot CPP	7m 36s
	7h 11m 48s

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