AntPathMatcher#isPattern also checks URI vars

Closes gh-22959

spring-core/src/main/java/org/springframework/util/AntPathMatcher.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -169,7 +169,21 @@ public class AntPathMatcher implements PathMatcher {
 
 	@Override
 	public boolean isPattern(String path) {
-		return (path.indexOf('*') != -1 || path.indexOf('?') != -1);
+		boolean uriVar = false;
+		for (int i = 0; i < path.length(); i++) {
+			char c = path.charAt(i);
+			if (c == '*' || c == '?') {
+				return true;
+			}
+			if (c == '{') {
+				uriVar = true;
+				continue;
+			}
+			if (c == '}' && uriVar) {
+				return true;
+			}
+		}
+		return false;
 	}
 
 	@Override