[wasm] Add the 'end' opcode at the end of the fuzzer input

test/fuzzer/wasm-call.cc

Index: test/fuzzer/wasm-call.cc
diff --git a/test/fuzzer/wasm-call.cc b/test/fuzzer/wasm-call.cc
index 32a8ad97d7d69b9daf8cc7c877a030dc30e335db..e18575c5d6f5b522e62a4cb47d0c38ed84fbcdaa 100644
--- a/test/fuzzer/wasm-call.cc
+++ b/test/fuzzer/wasm-call.cc
@@ -114,6 +114,8 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
         builder.AddFunction(sig_builder.Build());
     uint32_t code_size = static_cast<uint32_t>(size / num_functions);
     f->EmitCode(data, code_size);
+    uint8_t end_opcode = kExprEnd;
+    f->EmitCode(&end_opcode, 1);
     data += code_size;
     size -= code_size;
     if (fun == 0) {