Merge cranelift/wasmtime fuzzing

fuzz/fuzz_targets/reader_parse_test.rs

@@ -0,0 +1,12 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+
+use std::str;
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(s) = str::from_utf8(data) {
+        let options = cranelift_reader::ParseOptions::default();
+        let _ = cranelift_reader::parse_test(s, options);
+    }
+});