Interactive forms: values for radio buttons (issue #6995)

src/core/annotation.js

@@ -786,14 +786,12 @@ var ButtonWidgetAnnotation = (function ButtonWidgetAnnotationClosure() {
       // The parent field's `V` entry holds a `Name` object with the appearance
       // state of whichever child field is currently in the "on" state.
       var fieldParent = params.dict.get('Parent');
-      if (!isDict(fieldParent) || !fieldParent.has('V')) {
+      if (isDict(fieldParent) && fieldParent.has('V')) {
-        return;
+        var fieldParentValue = fieldParent.get('V');
-      }
+        if (isName(fieldParentValue)) {
-      var fieldParentValue = fieldParent.get('V');
+          this.data.fieldValue = fieldParentValue.name;
-      if (!isName(fieldParentValue)) {
+        }
-        return;
       }
-      this.data.fieldValue = fieldParentValue.name;
 
       // The button's value corresponds to its appearance state.
       var appearanceStates = params.dict.get('AP');