fix(nsis): undefined vars when customCheckAppRunning is defined (#9245)

Author: dlon

.changeset/old-spies-lick.md

@@ -0,0 +1,5 @@
+---
+"app-builder-lib": patch
+---
+
+fix(nsis): undefined vars when `customCheckAppRunning` is defined

packages/app-builder-lib/templates/nsis/include/allowOnlyOneInstallerInstance.nsh

@@ -33,12 +33,12 @@
   Var /GLOBAL CmdPath
   Var /GLOBAL FindPath
   Var /GLOBAL PowerShellPath
+  StrCpy $CmdPath "$SYSDIR\cmd.exe"
+  StrCpy $FindPath "$SYSDIR\find.exe"
+  StrCpy $PowerShellPath "$SYSDIR\WindowsPowerShell\v1.0\powershell.exe"
   !ifmacrodef customCheckAppRunning
     !insertmacro customCheckAppRunning
   !else
-    StrCpy $CmdPath "$SYSDIR\cmd.exe"
-    StrCpy $FindPath "$SYSDIR\find.exe"
-    StrCpy $PowerShellPath "$SYSDIR\WindowsPowerShell\v1.0\powershell.exe"
     !insertmacro IS_POWERSHELL_AVAILABLE
     !insertmacro _CHECK_APP_RUNNING
   !endif