增加websocket支持

vendor/github.com/go-playground/validator/v10/cache.go

@@ -20,7 +20,6 @@ const (
 	typeOr
 	typeKeys
 	typeEndKeys
-	typeOmitNil
 )
 
 const (
@@ -126,7 +125,7 @@ func (v *Validate) extractStructCache(current reflect.Value, sName string) *cStr
 
 		fld = typ.Field(i)
 
-		if !v.privateFieldValidation && !fld.Anonymous && len(fld.PkgPath) > 0 {
+		if !fld.Anonymous && len(fld.PkgPath) > 0 {
 			continue
 		}
 
@@ -253,10 +252,6 @@ func (v *Validate) parseFieldTagsRecursive(tag string, fieldName string, alias s
 			current.typeof = typeOmitEmpty
 			continue
 
-		case omitnil:
-			current.typeof = typeOmitNil
-			continue
-
 		case structOnlyTag:
 			current.typeof = typeStructOnly
 			continue