Fix TemplateLocation.anyExists logic

Fix broken logic in TemplateLocation.anyExists caused by not using the
local `searchPath` variable.

See gh-2184
Closes gh-2248

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/template/TemplateLocation.java

@@ -65,8 +65,8 @@ public class TemplateLocation {
 			searchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX
 					+ searchPath.substring(ResourceLoader.CLASSPATH_URL_PREFIX.length());
 		}
-		if (this.path.startsWith(ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX)) {
-			Resource[] resources = resolver.getResources(this.path);
+		if (searchPath.startsWith(ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX)) {
+			Resource[] resources = resolver.getResources(searchPath);
 			for (Resource resource : resources) {
 				if (resource.exists()) {
 					return true;