fix currentDeckPath空指

mobile/src/main/java/cn/garymb/ygomobile/ui/cards/DeckManagerActivityImpl.java

@@ -1189,6 +1189,7 @@ class DeckManagerActivityImpl extends BaseCardsAcitivity implements RecyclerView
     @Override
     public void onDeckMove(List<DeckFile> deckFileList, DeckType toDeckType) {
         String currentDeckPath = mDeckAdapater.getYdkFile().getAbsolutePath();
+        if (currentDeckPath != null) {
             for (DeckFile deckFile : deckFileList) {
                 if (deckFile.getPath().equals(currentDeckPath)) {
                     loadDeckFromFile(new File(toDeckType.getPath(), deckFile.getName() + ".ydk"));
@@ -1196,6 +1197,7 @@ class DeckManagerActivityImpl extends BaseCardsAcitivity implements RecyclerView
                 }
             }
         }
+    }
 
     @Override
     public void onDeckCopy(List<DeckFile> deckFileList, DeckType toDeckType) {