No visible change.

PiperOrigin-RevId: 382141204

core/src/com/google/inject/AbstractModule.java

@@ -55,6 +55,8 @@ public abstract class AbstractModule implements Module {
 
   Binder binder;
 
+  public AbstractModule() {}
+
   @Override
   public final synchronized void configure(Binder builder) {
     checkState(this.binder == null, "Re-entry is not allowed.");