findbugs: use log instead of print stack trace

src/main/java/com/owncloud/android/operations/UploadFileOperation.java

@@ -25,6 +25,7 @@ import android.content.Context;
 import android.net.Uri;
 import android.os.Build;
 import android.support.annotation.RequiresApi;
+import android.util.Log;
 
 import com.evernote.android.job.JobRequest;
 import com.evernote.android.job.util.Device;
@@ -976,7 +977,7 @@ public class UploadFileOperation extends SyncOperation {
                 try {
                     move(originalFile, newFile);
                 } catch (IOException e) {
-                    e.printStackTrace();
+                    Log.e(TAG, "Error moving file", e);
                 }
                 getStorageManager().deleteFileInMediaScan(originalFile.getAbsolutePath());
                 mFile.setStoragePath(newFile.getAbsolutePath());