unused declaration: fix for references from local var type (IDEA-199400)

java/java-analysis-impl/src/com/intellij/codeInspection/reference/RefJavaUtilImpl.java

@@ -84,6 +84,12 @@ public class RefJavaUtilImpl extends RefJavaUtil {
                          }
                        }
 
+                       @Override
+                       public boolean visitVariable(@NotNull UVariable node) {
+                         visitTypeRefs(node.getType());
+                         return false;
+                       }
+
                        @Override
                        public boolean visitSimpleNameReferenceExpression(@NotNull USimpleNameReferenceExpression node) {
                          final PsiElement target = node.resolve();