Fix preference dialog double-creation

Change-Id: I93aba64c2262c7b9e77265eeefd3bcd5a428ba48
diff --git a/v14/preference/src/android/support/v14/preference/PreferenceDialogFragment.java b/v14/preference/src/android/support/v14/preference/PreferenceDialogFragment.java
index b9027a4..8f5dd64 100644
--- a/v14/preference/src/android/support/v14/preference/PreferenceDialogFragment.java
+++ b/v14/preference/src/android/support/v14/preference/PreferenceDialogFragment.java
@@ -87,8 +87,7 @@
             requestInputMethod(dialog);
         }
 
-
-        return builder.create();
+        return dialog;
     }
 
     /**
diff --git a/v7/preference/src/android/support/v7/preference/PreferenceDialogFragmentCompat.java b/v7/preference/src/android/support/v7/preference/PreferenceDialogFragmentCompat.java
index f96d2ce..6bc2df0 100644
--- a/v7/preference/src/android/support/v7/preference/PreferenceDialogFragmentCompat.java
+++ b/v7/preference/src/android/support/v7/preference/PreferenceDialogFragmentCompat.java
@@ -85,8 +85,7 @@
             requestInputMethod(dialog);
         }
 
-
-        return builder.create();
+        return dialog;
     }
 
     /**