Polish "Removed some redundant 'else's using early return"

See gh-22528

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/endpoint/web/documentation/AbstractEndpointDocumentationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 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.

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/json-shade/java/org/springframework/boot/configurationprocessor/json/JSONObject.java

@@ -596,10 +596,12 @@ public class JSONObject {
 	 */
 	public JSONArray getJSONArray(String name) throws JSONException {
 		Object object = get(name);
-		if (!(object instanceof JSONArray)) {
+		if (object instanceof JSONArray) {
+			return (JSONArray) object;
+		}
+		else {
 			throw JSON.typeMismatch(name, object, "JSONArray");
 		}
-		return (JSONArray) object;
 	}
 
 	/**
@@ -623,10 +625,12 @@ public class JSONObject {
 	 */
 	public JSONObject getJSONObject(String name) throws JSONException {
 		Object object = get(name);
-		if (!(object instanceof JSONObject)) {
+		if (object instanceof JSONObject) {
+			return (JSONObject) object;
+		}
+		else {
 			throw JSON.typeMismatch(name, object, "JSONObject");
 		}
-		return (JSONObject) object;
 	}
 
 	/**

spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/json-shade/java/org/springframework/boot/configurationprocessor/json/JSONTokener.java

@@ -549,13 +549,15 @@ public class JSONTokener {
 		if (hex >= '0' && hex <= '9') {
 			return hex - '0';
 		}
-		if (hex >= 'A' && hex <= 'F') {
+		else if (hex >= 'A' && hex <= 'F') {
 			return hex - 'A' + 10;
 		}
-		if (hex >= 'a' && hex <= 'f') {
+		else if (hex >= 'a' && hex <= 'f') {
 			return hex - 'a' + 10;
 		}
-		return -1;
+		else {
+			return -1;
+		}
 	}
 
 }