Fix Windows build
Fix Windows build

```
S:\jenkins\workspace\swift-PR-windows\swift\stdlib\public\Concurrency\Actor.cpp(1612,22): error: expected unqualified-id
              : std::max(oldPriority, job->getPriority());
                     ^
C:\Program Files (x86)\Windows Kits\10\\Include\10.0.18362.0\shared\minwindef.h(193,29): note: expanded from macro max
#define max(a,b)            (((a) > (b)) ? (a) : (b))
                            ^
1 error generated.
```

gregomni/swift,roambotics/swift,hooman/swift,parkera/swift,ahoppen/swift,xwu/swift,JGiola/swift,apple/swift,rudkx/swift,hooman/swift,gregomni/swift,apple/swift,gregomni/swift,benlangmuir/swift,ahoppen/swift,glessard/swift,benlangmuir/swift,xwu/swift,tkremenek/swift,glessard/swift,gregomni/swift,xwu/swift,xwu/swift,parkera/swift,benlangmuir/swift,xwu/swift,parkera/swift,atrick/swift,rudkx/swift,ahoppen/swift,tkremenek/swift,glessard/swift,gregomni/swift,tkremenek/swift,roambotics/swift,rudkx/swift,parkera/swift,parkera/swift,JGiola/swift,atrick/swift,ahoppen/swift,hooman/swift,apple/swift,parkera/swift,JGiola/swift,roambotics/swift,benlangmuir/swift,tkremenek/swift,hooman/swift,rudkx/swift,roambotics/swift,benlangmuir/swift,apple/swift,glessard/swift,xwu/swift,tkremenek/swift,atrick/swift,ahoppen/swift,atrick/swift,rudkx/swift,apple/swift,glessard/swift,atrick/swift,benlangmuir/swift,hooman/swift,tkremenek/swift,JGiola/swift,roambotics/swift,xwu/swift,parkera/swift,rudkx/swift,glessard/swift,ahoppen/swift,apple/swift,atrick/swift,JGiola/swift,hooman/swift,parkera/swift,hooman/swift,tkremenek/swift,gregomni/swift,roambotics/swift,JGiola/swift