fix test

Author: jdconrad

server/src/main/java/org/elasticsearch/action/search/MultiSearchRequest.java

@@ -272,7 +272,11 @@ public static void readMultiLineFormat(
                     )
                 ) {
                     Map<String, Object> source = parser.map();
-                    if (parser.nextToken() != null) {
+                    // In Jackson 2.21+, parser.map() leaves the parser at END_OBJECT, need to advance past it
+                    XContentParser.Token token = parser.currentToken() == XContentParser.Token.END_OBJECT
+                        ? parser.nextToken()
+                        : parser.currentToken();
+                    if (token != null) {
                         throw new XContentParseException(parser.getTokenLocation(), "Unexpected token after end of object");
                     }
                     Object expandWildcards = null;
@@ -360,7 +364,11 @@ public static void readMultiLineFormat(
                 )
             ) {
                 consumer.accept(searchRequest, parser);
-                if (parser.nextToken() != null) {
+                // In Jackson 2.21+, after parsing, the parser may be at END_OBJECT, need to advance past it
+                XContentParser.Token token = parser.currentToken() == XContentParser.Token.END_OBJECT
+                    ? parser.nextToken()
+                    : parser.currentToken();
+                if (token != null) {
                     throw new XContentParseException(parser.getTokenLocation(), "Unexpected token after end of object");
                 }
             }