[winasan] Fix strrchr interception with vs2019 CRT
strrchr in vs2019 CRT begins with unrecognized instructions.
VCRUNTIME140!strrchr:
4533c9         xor     r9d, r9d
4c8bc1         mov     r8, rcx
Patch by Christopher Reid!
@@ -512,10 +512,12 @@ static size_t GetInstructionSize(uptr address, size_t* rel_offset = nullptr) {
case 0xc0854d: // 4d 85 c0 : test r8, r8
case 0xc2b60f: // 0f b6 c2 : movzx eax, dl
case 0xc03345: // 45 33 c0 : xor r8d, r8d
+ case 0xc93345: // 45 33 c9 : xor r9d, r9d
case 0xdb3345: // 45 33 DB : xor r11d, r11d
case 0xd98b4c: // 4c 8b d9 : mov r11, rcx
case 0xd28b4c: // 4c 8b d2 : mov r10, rdx
case 0xc98b4c: // 4C 8B C9 : mov r9, rcx
+ case 0xc18b4c: // 4C 8B C1 : mov r8, rcx
case 0xd2b60f: // 0f b6 d2 : movzx edx, dl
case 0xca2b48: // 48 2b ca : sub rcx, rdx
case 0x10b70f: // 0f b7 10 : movzx edx, WORD PTR [rax]
