Fixes #1949637. Home was setting waitingForResult=true whenever an app was launched.

Home was incorrectly treating apps launches as subactivties launched to obtain results.
This resulted in a protective flag being set when it should not have been.

src/com/android/launcher/Launcher.java

@@ -1096,7 +1096,7 @@ public final class Launcher extends Activity implements View.OnClickListener, On
 
     @Override
     public void startActivityForResult(Intent intent, int requestCode) {
-        mWaitingForResult = true;
+        if (requestCode >= 0) mWaitingForResult = true;
         super.startActivityForResult(intent, requestCode);
     }