wscript: remove an unused variable (LLVM/Clang)

[Austin English]

-- 
-Austin
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diff --git a/programs/wscript/tests/run.c b/programs/wscript/tests/run.c
index 315f51f..567bf45 100644
--- a/programs/wscript/tests/run.c
+++ b/programs/wscript/tests/run.c
@@ -341,7 +341,6 @@ static IClassFactory testobj_cf = { &ClassFactoryVtbl };
 
 static void run_test(const char *file_name)
 {
-    SECURITY_ATTRIBUTES sa = {sizeof(sa), 0, TRUE};
     char command[MAX_PATH];
     STARTUPINFOA si = {sizeof(si)};
     PROCESS_INFORMATION pi;