fix win compiler div/zero
fix win compiler div/zero

R=bsalomon@google.com
TBR=bsalomon@google.com
NOTREECHECKS=true
NOTRY=true

Author: halcanary@google.com

Review URL: https://codereview.chromium.org/474433002

samuelig/skia,YUPlayGodDev/platform_external_skia,geekboxzone/lollipop_external_chromium_org_third_party_skia,noselhq/skia,FusionSP/external_chromium_org_third_party_skia,timduru/platform-external-skia,AOSP-YU/platform_external_skia,google/skia,MonkeyZZZZ/platform_external_skia,AOSPB/external_skia,AOSP-YU/platform_external_skia,google/skia,TeamTwisted/external_skia,chenlian2015/skia_from_google,TeamEOS/external_chromium_org_third_party_skia,TeamEOS/external_chromium_org_third_party_skia,MinimalOS/android_external_chromium_org_third_party_skia,Infinitive-OS/platform_external_skia,noselhq/skia,pcwalton/skia,Omegaphora/external_chromium_org_third_party_skia,jtg-gg/skia,VRToxin-AOSP/android_external_skia,amyvmiwei/skia,todotodoo/skia,Jichao/skia,VRToxin-AOSP/android_external_skia,pcwalton/skia,shahrzadmn/skia,TeamExodus/external_skia,timduru/platform-external-skia,aosp-mirror/platform_external_skia,MinimalOS/external_chromium_org_third_party_skia,invisiblek/android_external_skia,HalCanary/skia-hc,ominux/skia,rubenvb/skia,vanish87/skia,nvoron23/skia,Hikari-no-Tenshi/android_external_skia,geekboxzone/mmallow_external_skia,ench0/external_chromium_org_third_party_skia,DiamondLovesYou/skia-sys,xin3liang/platform_external_chromium_org_third_party_skia,OptiPop/external_chromium_org_third_party_skia,google/skia,aosp-mirror/platform_external_skia,YUPlayGodDev/platform_external_skia,tmpvar/skia.cc,MIPS/external-chromium_org-third_party-skia,AOSP-YU/platform_external_skia,UBERMALLOW/external_skia,vanish87/skia,samuelig/skia,TeamExodus/external_skia,xin3liang/platform_external_chromium_org_third_party_skia,MarshedOut/android_external_skia,geekboxzone/lollipop_external_chromium_org_third_party_skia,BrokenROM/external_skia,TeamExodus/external_skia,nfxosp/platform_external_skia,timduru/platform-external-skia,tmpvar/skia.cc,Jichao/skia,MarshedOut/android_external_skia,PAC-ROM/android_external_skia,MinimalOS/android_external_chromium_org_third_party_skia,chenlian2015/skia_from_google,DiamondLovesYou/skia-sys,tmpvar/skia.cc,AOSPB/external_skia,geekboxzone/mmallow_external_skia,AOSPB/external_skia,pcwalton/skia,Igalia/skia,google/skia,pcwalton/skia,aosp-mirror/platform_external_skia,shahrzadmn/skia,boulzordev/android_external_skia,shahrzadmn/skia,nfxosp/platform_external_skia,jtg-gg/skia,rubenvb/skia,YUPlayGodDev/platform_external_skia,shahrzadmn/skia,AOSPB/external_skia,tmpvar/skia.cc,MIPS/external-chromium_org-third_party-skia,MarshedOut/android_external_skia,Omegaphora/external_chromium_org_third_party_skia,Fusion-Rom/external_chromium_org_third_party_skia,nfxosp/platform_external_skia,nfxosp/platform_external_skia,MinimalOS/android_external_chromium_org_third_party_skia,spezi77/android_external_skia,mydongistiny/external_chromium_org_third_party_skia,MinimalOS-AOSP/platform_external_skia,TeamEOS/external_chromium_org_third_party_skia,MIPS/external-chromium_org-third_party-skia,mydongistiny/external_chromium_org_third_party_skia,Omegaphora/external_chromium_org_third_party_skia,amyvmiwei/skia,MyAOSP/external_chromium_org_third_party_skia,AOSP-YU/platform_external_skia,Jichao/skia,MyAOSP/external_chromium_org_third_party_skia,vanish87/skia,mydongistiny/external_chromium_org_third_party_skia,MinimalOS/android_external_chromium_org_third_party_skia,OptiPop/external_chromium_org_third_party_skia,PAC-ROM/android_external_skia,qrealka/skia-hc,MonkeyZZZZ/platform_external_skia,PAC-ROM/android_external_skia,MinimalOS-AOSP/platform_external_skia,MonkeyZZZZ/platform_external_skia,Jichao/skia,BrokenROM/external_skia,Igalia/skia,DARKPOP/external_chromium_org_third_party_skia,boulzordev/android_external_skia,pcwalton/skia,MarshedOut/android_external_skia,google/skia,OneRom/external_skia,MinimalOS/android_external_chromium_org_third_party_skia,HalCanary/skia-hc,todotodoo/skia,FusionSP/external_chromium_org_third_party_skia,nvoron23/skia,geekboxzone/mmallow_external_skia,BrokenROM/external_skia,samuelig/skia,YUPlayGodDev/platform_external_skia,MinimalOS-AOSP/platform_external_skia,android-ia/platform_external_chromium_org_third_party_skia,Infinitive-OS/platform_external_skia,qrealka/skia-hc,UBERMALLOW/external_skia,Omegaphora/external_chromium_org_third_party_skia,xin3liang/platform_external_chromium_org_third_party_skia,geekboxzone/lollipop_external_chromium_org_third_party_skia,noselhq/skia,geekboxzone/mmallow_external_skia,boulzordev/android_external_skia,chenlian2015/skia_from_google,MinimalOS/external_chromium_org_third_party_skia,android-ia/platform_external_chromium_org_third_party_skia,Fusion-Rom/external_chromium_org_third_party_skia,VRToxin-AOSP/android_external_skia,VRToxin-AOSP/android_external_skia,qrealka/skia-hc,noselhq/skia,YUPlayGodDev/platform_external_skia,todotodoo/skia,MIPS/external-chromium_org-third_party-skia,ominux/skia,scroggo/skia,samuelig/skia,geekboxzone/mmallow_external_skia,mydongistiny/external_chromium_org_third_party_skia,Jichao/skia,android-ia/platform_external_chromium_org_third_party_skia,scroggo/skia,nvo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