Enable emplace_back for zone containers

src/wasm/wasm-interpreter.cc

Index: src/wasm/wasm-interpreter.cc
diff --git a/src/wasm/wasm-interpreter.cc b/src/wasm/wasm-interpreter.cc
index 4bb215a51ac2e7f13d7dc677def634abe16b052b..d6e63d18be957b7b9935f1068ece1c9f1077498a 100644
--- a/src/wasm/wasm-interpreter.cc
+++ b/src/wasm/wasm-interpreter.cc
@@ -1778,7 +1778,7 @@ class WasmInterpreterInternals : public ZoneObject {
         codemap_(env.instance ? env.instance->module : nullptr,
                  module_bytes_.data(), zone),
         threads_(zone) {
-    threads_.push_back(ThreadImpl(zone, &codemap_, env.instance));
+    threads_.emplace_back(zone, &codemap_, env.instance);
   }
 
   void Delete() { threads_.clear(); }