fix #24331, regression in try/finally scope (#24334)

caused by  #24075

src/julia-syntax.scm

@@ -1324,8 +1324,8 @@
               `(tryfinally
                 ,(if (not (eq? catchb 'false))
                      `(try ,tryb ,var ,catchb)
-                     tryb)
-                ,finalb))))
+                     `(scope-block ,tryb))
+                (scope-block ,finalb)))))
           ((length= e 4)
            (expand-forms
             (if (and (symbol-like? var) (not (eq? var 'false)))
@@ -3481,7 +3481,7 @@ f(x) = yt(x)
             (convert-for-type-decl y rett)
             y))
       (if (> handler-level 0)
-          (let ((tmp (cond ((or (simple-atom? x) (ssavalue? x) (equal? x '(null)))
+          (let ((tmp (cond ((or (simple-atom? x) (equal? x '(null)))
                             #f)
                            (finally-handler  (new-mutable-var))
                            (else  (make-ssavalue)))))

test/core.jl

@@ -867,6 +867,20 @@ function test12806()
 end
 @test test12806() == (true, true, false, [1])
 
+# issue #24331
+try
+    c24331 = 1
+finally
+end
+@test !isdefined(@__MODULE__, :c24331)
+function f24331()
+    try
+        x = [2]
+    finally
+    end
+end
+@test f24331() == [2]
+
 # finalizers
 let A = [1]
     local x = 0