fix reraise (#11017)

compiler/injectdestructors.nim

@@ -753,7 +753,7 @@ proc p(n: PNode; c: var Con): PNode =
     result = copyTree(n)
     result[1][0] = p(result[1][0], c)
   of nkRaiseStmt:
-    if optNimV2 in c.graph.config.globalOptions:
+    if optNimV2 in c.graph.config.globalOptions and n[0].kind != nkEmpty:
       let t = n[0].typ
       let tmp = getTemp(c, t, n.info)
       var m = genCopyNoCheck(c, t, tmp, n[0])

tests/destructor/tv2_raise.nim

@@ -9,10 +9,14 @@ import system / ansi_c
 import core / allocators
 
 proc mainA =
-  var e: owned(ref ValueError)
-  new(e)
-  e.msg = "message"
-  raise e
+  try:
+    var e: owned(ref ValueError)
+    new(e)
+    e.msg = "message"
+    raise e
+  except Exception as e:
+    raise
+
 
 proc main =
   raise newException(ValueError, "argh")