Fix another test

Author: odersky

tests/plugins/custom/analyzer/Analyzer_1.scala

@@ -16,7 +16,7 @@ import Phases.Phase
 import ast.tpd
 import transform.MegaPhase.MiniPhase
 import Decorators._
-import Symbols.Symbol
+import Symbols.{Symbol, requiredPackage}
 import Constants.Constant
 import Types._
 import transform.{ReifyQuotes, FirstTransform}
@@ -67,8 +67,8 @@ class InitChecker extends PluginPhase with StandardPlugin {
   private def checkRef(tree: Tree)(implicit ctx: Context): Tree =
     if (!checkable(tree.symbol)) tree
     else {
-      val helloPkgSym = ctx.requiredPackage("hello").moduleClass
-      val libPkgSym = ctx.requiredPackage("lib").moduleClass
+      val helloPkgSym = requiredPackage("hello").moduleClass
+      val libPkgSym = requiredPackage("lib").moduleClass
       val enclosingPkg = tree.symbol.enclosingPackageClass
 
       if (enclosingPkg == helloPkgSym) {  // source code