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win32: fix semaphore leak in osproc()

--- a/kern/win32.c

+++ b/kern/win32.c

@@ -83,21 +83,6 @@

 	Sleep(0);

 }

-static DWORD WINAPI tramp(LPVOID vp);

-

-void

-osproc(Proc *p)

-{

-	DWORD tid;

-

-	if(CreateThread(0, 0, tramp, p, 0, &tid) == 0) {

-		oserror();

-		panic("osproc: %r");

-	}

-

-	Sleep(0);

-}

-

 static DWORD WINAPI

 tramp(LPVOID vp)

 {

@@ -106,15 +91,20 @@

 	_setproc(p);

 	op->tid = GetCurrentThreadId();

-	op->sema = CreateSemaphore(0, 0, 1000, 0);

-	if(op->sema == 0) {

-		oserror();

-		panic("could not create semaphore: %r");

-	}

-

  	(*p->fn)(p->arg);

 	ExitThread(0);

 	return 0;

+}

+

+void

+osproc(Proc *p)

+{

+	DWORD tid;

+

+	if(CreateThread(0, 0, tramp, p, 0, &tid) == 0) {

+		oserror();

+		panic("osproc: %r");

+	}

 }

 void