Fix maven tests.

plugins/maven/src/main/java/org/jetbrains/idea/maven/execution/MavenRunnerParameters.java

@@ -107,6 +107,7 @@ public class MavenRunnerParameters implements Cloneable {
   }
 
   public void setGoals(@Nullable List<String> goals) {
+    if (myGoals == goals) return;  // Called from XML Serializer
     myGoals.clear();
 
     if (goals != null) {

plugins/maven/src/test/java/org/jetbrains/idea/maven/execution/MavenRunConfigurationTest.java

@@ -26,7 +26,7 @@ public class MavenRunConfigurationTest extends IdeaTestCase {
   public void testSaveLoadRunnerParameters() {
     MavenRunConfiguration.MavenSettings s = new MavenRunConfiguration.MavenSettings(myProject);
     s.myRunnerParameters.setWorkingDirPath("some path");
-    s.myRunnerParameters.setGoals(Arrays.asList("clean validate"));
+    s.myRunnerParameters.setGoals(Arrays.asList("clean", "validate"));
     s.myRunnerParameters.setProfilesMap(ImmutableMap.of("prof1", true, "prof2", true, "prof3", false));
 
     Element xml = XmlSerializer.serialize(s);