[wasm] Fix bounds check for zero initial memory.

src/mips64/assembler-mips64.cc

Index: src/mips64/assembler-mips64.cc
diff --git a/src/mips64/assembler-mips64.cc b/src/mips64/assembler-mips64.cc
index b35b166a2e3a1a75898d280d3ae7f412a70e5a53..c21a67a91d7537bb1fc780db988f6d5889d61530 100644
--- a/src/mips64/assembler-mips64.cc
+++ b/src/mips64/assembler-mips64.cc
@@ -183,6 +183,12 @@ uint32_t RelocInfo::wasm_memory_size_reference() {
       reinterpret_cast<intptr_t>((Assembler::target_address_at(pc_, host_))));
 }
 
+uint8_t RelocInfo::wasm_memtype_size_reference() {
+  DCHECK(IsWasmMemtypeSizeReference(rmode_));
+  return static_cast<uint8_t>(
+      reinterpret_cast<intptr_t>((Assembler::target_address_at(pc_, host_))));
+}
+
 void RelocInfo::unchecked_update_wasm_memory_reference(
     Address address, ICacheFlushMode flush_mode) {
   Assembler::set_target_address_at(isolate_, pc_, host_, address, flush_mode);