[wasm] Fix bounds check for zero initial memory.

test/cctest/test-run-wasm-relocation-arm64.cc

Index: test/cctest/test-run-wasm-relocation-arm64.cc
diff --git a/test/cctest/test-run-wasm-relocation-arm64.cc b/test/cctest/test-run-wasm-relocation-arm64.cc
index 3b49f00afc348e963e4f2a03298c58b14be30583..fb27628a3e1bc2188c8b3d3fe36753fde2048819 100644
--- a/test/cctest/test-run-wasm-relocation-arm64.cc
+++ b/test/cctest/test-run-wasm-relocation-arm64.cc
@@ -84,7 +84,7 @@ TEST(WasmRelocationArm64MemorySizeReference) {
   HandleScope scope(isolate);
   v8::internal::byte buffer[4096];
   DummyStaticFunction(NULL);
-  Immediate size = Immediate(512, RelocInfo::WASM_MEMORY_SIZE_REFERENCE);
+  Immediate size = Immediate(512, RelocInfo::WASM_MEMORY_DWORD_SIZE_REFERENCE);
   Label fail;
 
   MacroAssembler masm(isolate, buffer, sizeof buffer,
@@ -115,7 +115,7 @@ TEST(WasmRelocationArm64MemorySizeReference) {
 #endif
   int32_t diff = 512;
 
-  int mode_mask = (1 << RelocInfo::WASM_MEMORY_SIZE_REFERENCE);
+  int mode_mask = (1 << RelocInfo::WASM_MEMORY_DWORD_SIZE_REFERENCE);
   for (RelocIterator it(*code, mode_mask); !it.done(); it.next()) {
     RelocInfo::Mode mode = it.rinfo()->rmode();
     if (RelocInfo::IsWasmMemorySizeReference(mode)) {