Crash when using wholeTextForPage

[muchabartek]

Hi, first of all thanks for this great library, we are using it for quite a long time and it is very useful to us.

Unfortunately we have a problem wholeTextForPage method. When we try to search for text application crashes in -[MFToUnicodeCMapScannerMultibyte scan] due to EXC_BAD_ACCESS issue. This crash occurs on iOS 10.2 (any other iOS versions parsing is successful). Document is in Korean language.

#1	0x0000000100109848 in -[MFToUnicodeCMapScannerMultibyte scan]
#2	0x00000001001039d9 in parseToUnicodeCMapStreamMultibyte
#3	0x000000010010484d in sniffType0Font
#4	0x00000001001058ef in fontDictionarySnifferFunction
#5	0x00000001014b4233 in CGPDFDictionaryApplyFunction ()
#6	0x0000000100105a8e in -[MFStreamScanner scan]
#7	0x0000000100110d14 in -[MFDocumentManager wholeTextForPage:]

Is there any way to fix it using current version of library, or to provide any hotfix so that we can successfully use it under latest iOS?

If needed I can provide a test pdf which is failing, but please provide an email address or any other option share this file securely, as it's not something I can share to anyone.
Any help appreaciated.