Merge pull request #63 from chaitin/fix(walk)/panic

fix(walk): avoid panic

go/pkg/binding/errors.go

@@ -122,3 +122,13 @@ func handleError(code ErrorType) error {
 	}
 	return handleErrorInternal(err)
 }
+
+// handleWalkError is used for walk function
+// error handler.
+func handleWalkError(code ErrorType) error {
+	err := Handle(IDType(code))
+	if err.IsEOK() {
+		return nil
+	}
+	return handleErrorInternal(err)
+}

go/pkg/binding/walk.go

@@ -42,7 +42,7 @@ func (h Handle) Walk(path string, f WalkFunc) error {
 			continue
 		}
 		defer walkFuncMap.Delete(cookie)
-		if err := handleError(C.veinmind_InvokeWalkHandler(
+		if err := handleWalkError(C.veinmind_InvokeWalkHandler(
 			h.ID(), str.ID(), unsafe.Pointer(cookie))); err != nil {
 			return err
 		}