guard instance side initialization on Windows

Author: demarey

repository/OSSubprocess.package/OSSVMProcess.class/instance/initialize.st

@@ -2,6 +2,7 @@ initialize - release
 initialize
 	"Set my instance variables to reflect the state of the OS process in which 
 	this Smalltalk virtual machine is. executing."
+	Smalltalk os isWindows ifTrue: [ ^ self ]. "Cannot be initialized nor used on Windows."
 
 	accessProtect := Semaphore forMutualExclusion.
 	mutexForCwd := Semaphore forMutualExclusion.