ignore exceptions when epub parsing (#1360)

* ignore exceptions when epub parsing

* Update comic2ebook.py

* Update comic2ebook.py

Author: axu2

kindlecomicconverter/comic2ebook.py

@@ -975,10 +975,11 @@ def getWorkFolder(afile, workdir=None):
                         manifest_dict[manifest_item.attrib.get('id')] = manifest_item.attrib.get('href')
                     ordered_image_paths = []
                     for i, spine_item in enumerate(spine):
-                        if spine_item not in manifest_dict:
+                        try:
+                            page_path = os.path.join(os.path.dirname(opf_path), manifest_dict[spine_item])
+                            page = ET.parse(page_path)
+                        except Exception:
                             continue
-                        page_path = os.path.join(os.path.dirname(opf_path), manifest_dict[spine_item])
-                        page = ET.parse(page_path)
                         imgs = page.findall(r'.//{*}img') + page.findall(r'.//{*}image')
 
                         largest_size = 0