Update .github/workflows/swift-toolchain.yml

Co-authored-by: Saleem Abdulrasool <[email protected]>

Author: Steelskin

.github/workflows/swift-toolchain.yml

@@ -778,11 +778,7 @@ jobs:
         run: |
           if ("${{ matrix.os }}" -eq "Windows") {
               $ExeSuffix = ".exe"
-              if ("${{ matrix.arch }}" -eq "arm64") {
-                $Cpu = "aarch64"
-              } else {
-                $Cpu = "x86_64"
-              }
+              $Cpu = if ("${{ matrix.arch }}" -eq "arm64") { "aarch64" } else { "x86_64" }
               $SourceBinDir = Join-Path "${{ github.workspace }}" "BinaryCache" "swift-driver" "${Cpu}-unknown-windows-msvc" "release"
           } else {
               $ExeSuffix = ""