fix StopIteration when charset of font is UTF-8 (vs utf8)

Author: kienerj

pycdxml/cdxml_converter/chemdraw_types.py

@@ -357,6 +357,8 @@ def from_element(fonttable: ET.Element) -> 'CDXFontTable':
         for font in fonttable.iter(tag="font"):
             logger.debug(f"Reading font {font.attrib}.")
             font_id = int(font.attrib["id"])
+            if font.attrib["charset"] == "UTF-8":
+                font.attrib["charset"] = "utf8"
             charset = next(key for key, value in Font.CHARSETS.items() if value == font.attrib["charset"])
             font_name = font.attrib["name"]
             fonts.append(Font(font_id, charset, font_name))