add remove tmp file

@@ -285,10 +285,12 @@ class DocView(GenericView, DocHandler):
         try:
         try:
             file = fitz.Document(tmp_save_path)
             file = fitz.Document(tmp_save_path)
         except Exception as e:
         except Exception as e:
+            os.remove(tmp_save_path)
             raise self.invalid_params(msg='invalid params: not a PDF file')
             raise self.invalid_params(msg='invalid params: not a PDF file')
         else:
         else:
             if not file.isPDF:
             if not file.isPDF:
                 file.close()
                 file.close()
+                os.remove(tmp_save_path)
                 raise self.invalid_params(msg='invalid params: not a PDF file')
                 raise self.invalid_params(msg='invalid params: not a PDF file')
 
 
         file.close()
         file.close()