nested finally bug (#7207)

tests/exception/tfinally.nim

@@ -1,6 +1,13 @@
 discard """
   file: "tfinally.nim"
-  output: "came\nhere\n3"
+  output: '''came
+here
+3
+msg1
+msg2
+finally2
+finally1
+'''
 """
 # Test return in try statement:
 
@@ -17,3 +24,19 @@ proc main: int =
 
 echo main() #OUT came here 3
 
+#bug 7204
+proc nested_finally =
+  try:
+    raise newException(KeyError, "msg1")
+  except KeyError as ex:
+    echo ex.msg
+    try:
+      raise newException(ValueError, "msg2")
+    except:
+      echo getCurrentExceptionMsg()
+    finally:
+      echo "finally2"
+  finally:
+    echo "finally1"
+
+nested_finally()