Fixed infinite loop when character data handler was cleared under XML_TOK_DATA_CHARS in doContent() and doCdataSection().
Fixed infinite loop when character data handler was cleared under
XML_TOK_DATA_CHARS in doContent() and doCdataSection().

libexpat/libexpat,tiran/expat,libexpat/libexpat,libexpat/libexpat,tiran/expat,tiran/expat,libexpat/libexpat,tiran/expat,libexpat/libexpat,libexpat/libexpat