Fix ubsan compile (#1641)
Fix ubsan compile (#1641)

This happens when both HAS_UBSAN_RECOVER_BARE and HAS_UBSAN_RECOVER_ALL
is supported, then we end up setting USE_UBSAN twice, and hit the
FATAL_ERROR "Only one sanitizer allowed".
WebAssembly/wabt,WebAssembly/sexpr-wasm-prototype,WebAssembly/wabt,WebAssembly/wabt,WebAssembly/wabt,WebAssembly/sexpr-wasm-prototype,WebAssembly/sexpr-wasm-prototype,WebAssembly/sexpr-wasm-prototype,WebAssembly/wabt,WebAssembly/sexpr-wasm-prototype,WebAssembly/sexpr-wasm-prototype