fix(query): do not visit dehydrated injectors.

modules/angular2/src/core/compiler/element_injector.ts

@@ -486,11 +486,11 @@ export class ElementInjector extends TreeNode<ElementInjector> implements Depend
     this._addDirectivesToQueries();
     this._addVarBindingsToQueries();
 
+    this.hydrated = true;
+
     // TODO(rado): optimize this call, if view queries are not moved around,
     // simply appending to the query list is faster than updating.
     this._updateViewQueries();
-
-    this.hydrated = true;
   }
 
   private _updateViewQueries() {
@@ -1164,7 +1164,7 @@ export class QueryRef {
   }
 
   visit(inj: ElementInjector, aggregator: any[]): void {
-    if (isBlank(inj) || !inj._hasQuery(this)) return;
+    if (isBlank(inj) || !inj._hasQuery(this) || !inj.hydrated) return;
 
     if (this.query.isVarBindingQuery) {
       this._aggregateVariableBindings(inj, aggregator);

modules/angular2/test/core/compiler/query_integration_spec.ts

@@ -103,6 +103,24 @@ export function main() {
                });
          }));
 
+      it('should be cleanly destroyed when a query crosses view boundaries',
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+           var template =
+               '<div text="1"></div>' +
+               '<needs-query text="2"><div *ng-if="shouldShow" [text]="\'3\'"></div></needs-query>' +
+               '<div text="4"></div>';
+
+           tcb.overrideTemplate(MyComp, template)
+               .createAsync(MyComp)
+               .then((rtc) => {
+                 rtc.componentInstance.shouldShow = true;
+                 rtc.detectChanges();
+                 rtc.destroy();
+
+                 async.done();
+               });
+         }));
+
       it('should reflect moved directives',
          inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
            var template =