fix: don't auto-start jetty service for negative port

Author: Dogacel

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyWebServer.java

@@ -145,24 +145,23 @@ public void start() throws WebServerException {
 				return;
 			}
 			this.server.setConnectors(this.connectors);
-			if (!this.autoStart) {
-				return;
-			}
 			try {
 				this.server.start();
-				for (Handler handler : this.server.getHandlers()) {
-					handleDeferredInitialize(handler);
-				}
-				Connector[] connectors = this.server.getConnectors();
-				for (Connector connector : connectors) {
-					try {
-						connector.start();
+				if (this.autoStart) {
+					for (Handler handler : this.server.getHandlers()) {
+						handleDeferredInitialize(handler);
 					}
-					catch (IOException ex) {
-						if (connector instanceof NetworkConnector networkConnector) {
-							PortInUseException.throwIfPortBindingException(ex, networkConnector::getPort);
+					Connector[] connectors = this.server.getConnectors();
+					for (Connector connector : connectors) {
+						try {
+							connector.start();
+						}
+						catch (IOException ex) {
+							if (connector instanceof NetworkConnector networkConnector) {
+								PortInUseException.throwIfPortBindingException(ex, networkConnector::getPort);
+							}
+							throw ex;
 						}
-						throw ex;
 					}
 				}
 				this.started = true;
@@ -212,11 +211,11 @@ private String getContextPath() {
 			return null;
 		}
 		return this.server.getHandlers()
-			.stream()
-			.map(this::findContextHandler)
-			.filter(Objects::nonNull)
-			.map(ContextHandler::getContextPath)
-			.collect(Collectors.joining(" "));
+				.stream()
+				.map(this::findContextHandler)
+				.filter(Objects::nonNull)
+				.map(ContextHandler::getContextPath)
+				.collect(Collectors.joining(" "));
 	}
 
 	private ContextHandler findContextHandler(Handler handler) {