fixes

Author: kevmoo

protobuf/lib/src/protobuf/field_set.dart

@@ -287,7 +287,7 @@ class _FieldSet {
   /// Suitable for public API.
   void _setFieldNullable(int tagNumber, Object? value) {
     final meta = _meta;
-    var fi = _nonExtensionInfo(meta, tagNumber);
+    final fi = _nonExtensionInfo(meta, tagNumber);
     if (fi == null) {
       final extensions = _extensions;
       if (extensions == null) {

protoc_plugin/lib/src/message_generator.dart

@@ -545,7 +545,7 @@ class MessageGenerator extends ProtobufContainer {
 
   void generateFieldAccessorsMutators(
       ProtobufField field, IndentingWriter out, List<int> memberFieldPath) {
-    final fieldTypeString = field.getDartType();
+    var fieldTypeString = field.getDartType();
     final defaultExpr = field.getDefaultExpr();
     final names = field.memberNames;
 
@@ -591,7 +591,7 @@ class MessageGenerator extends ProtobufContainer {
             '${names.clearMethodName}() because it is repeated.';
       }
     } else {
-      final fastSetter = field.baseType.setter;
+      var fastSetter = field.baseType.setter;
       _emitDeprecatedIf(field.isDeprecated, out);
       _emitOverrideIf(field.overridesSetter, out);
       _emitIndexAnnotation(field.number, out);