util: Excise trailing whitespace in build.ps1.

Author: jeffdav

utils/build.ps1

@@ -638,7 +638,7 @@ function Invoke-VsDevShell($Arch) {
   if ($ToBatch) {
     Write-Output "call `"$VSInstallRoot\Common7\Tools\VsDevCmd.bat`" $DevCmdArguments"
   } else {
-    # This dll path is valid for VS2019 and VS2022, but it was under a vsdevcmd subfolder in VS2017 
+    # This dll path is valid for VS2019 and VS2022, but it was under a vsdevcmd subfolder in VS2017
     Import-Module "$VSInstallRoot\Common7\Tools\Microsoft.VisualStudio.DevShell.dll"
     Enter-VsDevShell -VsInstallPath $VSInstallRoot -SkipAutomaticLocation -DevCmdArguments $DevCmdArguments
 
@@ -1450,7 +1450,7 @@ function Build-WiXProject() {
   $ProductVersionArg = $ProductVersion
   if (-not $Bundle) {
     # WiX v4 will accept a semantic version string for Bundles,
-    # but Packages still require a purely numerical version number, 
+    # but Packages still require a purely numerical version number,
     # so trim any semantic versioning suffixes
     $ProductVersionArg = [regex]::Replace($ProductVersion, "[-+].*", "")
   }
@@ -1795,7 +1795,7 @@ function Build-Sanitizers([Platform]$Platform, $Arch) {
       LLVM_ENABLE_PER_TARGET_RUNTIME_DIR = "YES";
       COMPILER_RT_DEFAULT_TARGET_ONLY = "YES";
     })
-  
+
   Build-CMakeProject `
     -Src $SourceCache\llvm-project\compiler-rt `
     -Bin "$(Get-TargetProjectBinaryCache $Arch ClangRuntime)" `
@@ -2719,7 +2719,7 @@ function Test-Format {
     "-Xswiftc", "-I$(Get-HostProjectBinaryCache Format)\swift",
     "-Xlinker", "-L$(Get-HostProjectBinaryCache Format)\lib"
   )
-  
+
   Isolate-EnvVars {
     $env:SWIFTFORMAT_BUILD_ONLY_TESTS=1
     # Testing swift-format is faster in serial mode than in parallel mode, probably because parallel test execution