Fixed potential NPE

pierantoniomerlino · pierantoniomerlino · commit 50385fc8bfc5 · 2022-08-10T10:22:55.000+02:00
Signed-off-by: pierantoniomerlino &lt;pierantonio.merlino@eurotech.com&gt;
diff --git a/src/main/java/de/taimos/gpsd4java/backend/SocketThread.java b/src/main/java/de/taimos/gpsd4java/backend/SocketThread.java
@@ -132,10 +132,12 @@ protected void retry() {
 	public void halt() {
 		this.running.set(false);
 		
-		try {
-			this.reader.close();
-		} catch (final IOException e) {
-			// ignore
+		if (this.reader != null) {
+			try {
+				this.reader.close();
+			} catch (final IOException e) {
+				// ignore
+			}
 		}
 	}
 }
