Update to last common bleve (#3986)

vendor/github.com/blevesearch/bleve/mapping/document.go

@@ -179,6 +179,7 @@ OUTER:
 				continue OUTER
 			}
 		}
+		break
 	}
 	return current
 }
@@ -503,7 +504,7 @@ func (dm *DocumentMapping) processProperty(property interface{}, path []string,
 			}
 			dm.walkDocument(property, path, indexes, context)
 		}
-	case reflect.Map:
+	case reflect.Map, reflect.Slice:
 		if subDocMapping != nil {
 			for _, fieldMapping := range subDocMapping.Fields {
 				if fieldMapping.Type == "geopoint" {