Fix for bug 802.
Fix for bug 802.

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=802#c4
googlefonts/oss-fuzz,google/oss-fuzz,robertswiecki/oss-fuzz,ssbr/oss-fuzz,skia-dev/oss-fuzz,FeliciaLim/oss-fuzz,ssbr/oss-fuzz,skia-dev/oss-fuzz,robertswiecki/oss-fuzz,robertswiecki/oss-fuzz,skia-dev/oss-fuzz,googlefonts/oss-fuzz,google/oss-fuzz,skia-dev/oss-fuzz,vitalybuka/oss-fuzz,googlefonts/oss-fuzz,google/oss-fuzz,google/oss-fuzz,oliverchang/oss-fuzz,vitalybuka/oss-fuzz,googlefonts/oss-fuzz,robertswiecki/oss-fuzz,oliverchang/oss-fuzz,oliverchang/oss-fuzz,robertswiecki/oss-fuzz,FeliciaLim/oss-fuzz,kcc/oss-fuzz,skia-dev/oss-fuzz,ssbr/oss-fuzz,googlefonts/oss-fuzz,google/oss-fuzz,google/oss-fuzz,robertswiecki/oss-fuzz,googlefonts/oss-fuzz,oliverchang/oss-fuzz,robertswiecki/oss-fuzz,skia-dev/oss-fuzz,google/oss-fuzz,google/oss-fuzz,ssbr/oss-fuzz,vitalybuka/oss-fuzz,skia-dev/oss-fuzz,oliverchang/oss-fuzz,skia-dev/oss-fuzz,skia-dev/oss-fuzz,kcc/oss-fuzz,googlefonts/oss-fuzz,google/oss-fuzz,kcc/oss-fuzz,FeliciaLim/oss-fuzz,googlefonts/oss-fuzz,FeliciaLim/oss-fuzz,googlefonts/oss-fuzz,skia-dev/oss-fuzz,FeliciaLim/oss-fuzz,kcc/oss-fuzz,googlefonts/oss-fuzz,google/oss-fuzz,robertswiecki/oss-fuzz,robertswiecki/oss-fuzz,skia-dev/oss-fuzz,ssbr/oss-fuzz,google/oss-fuzz,kcc/oss-fuzz,robertswiecki/oss-fuzz,robertswiecki/oss-fuzz,vitalybuka/oss-fuzz,vitalybuka/oss-fuzz