sqlite: remove unnecessary auto assignment

Assignment is not necessary here at all.

PR-URL: nodejs#54686
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>

Author: tniessen

src/node_sqlite.cc

@@ -215,7 +215,7 @@ void DatabaseSync::Prepare(const FunctionCallbackInfo<Value>& args) {
     return;
   }
 
-  auto sql = node::Utf8Value(env->isolate(), args[0].As<String>());
+  node::Utf8Value sql(env->isolate(), args[0].As<String>());
   sqlite3_stmt* s = nullptr;
   int r = sqlite3_prepare_v2(db->connection_, *sql, -1, &s, 0);
   CHECK_ERROR_OR_THROW(env->isolate(), db->connection_, r, SQLITE_OK, void());
@@ -236,7 +236,7 @@ void DatabaseSync::Exec(const FunctionCallbackInfo<Value>& args) {
     return;
   }
 
-  auto sql = node::Utf8Value(env->isolate(), args[0].As<String>());
+  node::Utf8Value sql(env->isolate(), args[0].As<String>());
   int r = sqlite3_exec(db->connection_, *sql, nullptr, nullptr, nullptr);
   CHECK_ERROR_OR_THROW(env->isolate(), db->connection_, r, SQLITE_OK, void());
 }
@@ -324,7 +324,7 @@ bool StatementSync::BindParams(const FunctionCallbackInfo<Value>& args) {
         return false;
       }
 
-      auto utf8_key = node::Utf8Value(env()->isolate(), key);
+      node::Utf8Value utf8_key(env()->isolate(), key);
       int r = sqlite3_bind_parameter_index(statement_, *utf8_key);
       if (r == 0) {
         if (allow_bare_named_params_) {
@@ -380,7 +380,7 @@ bool StatementSync::BindValue(const Local<Value>& value, const int index) {
     double val = value.As<Number>()->Value();
     r = sqlite3_bind_double(statement_, index, val);
   } else if (value->IsString()) {
-    auto val = node::Utf8Value(env()->isolate(), value.As<String>());
+    node::Utf8Value val(env()->isolate(), value.As<String>());
     r = sqlite3_bind_text(
         statement_, index, *val, val.length(), SQLITE_TRANSIENT);
   } else if (value->IsNull()) {