Fix: without statement with error works in nested calls

questionable/private/binderror.nim

@@ -4,10 +4,15 @@ var captureEnabled {.global, compileTime.}: bool
 var errorVariable: ptr ref CatchableError
 
 template captureBindError*(error: var ref CatchableError, expression): auto =
-  static: captureEnabled = true
+  let previousErrorVariable = errorVariable
   errorVariable = addr error
+
+  static: captureEnabled = true
   let evaluated = expression
   static: captureEnabled = false
+
+  errorVariable = previousErrorVariable
+
   evaluated
 
 func error[T](option: Option[T]): ref CatchableError =

testmodules/result/test.nim

@@ -281,6 +281,19 @@ suite "result":
         check e2.msg == "error2"
       check e1.msg == "error1"
 
+  test "without statements with error work in nested calls":
+    proc bar(): ?!int =
+      without _ =? int.failure "error", err:
+        return failure err.msg
+
+    proc foo() =
+      without _ =? bar(), err:
+        check err.msg == "error"
+        return
+      fail()
+
+    foo()
+
   test "catch can be used to convert exceptions to results":
     check parseInt("42").catch == 42.success
     check parseInt("foo").catch.error of ValueError