fix: spotbugs issue

Author: simschla

lib/src/main/java/com/diffplug/spotless/npm/NpmFormatterStepStateBase.java

@@ -134,7 +134,7 @@ protected ServerProcessInfo npmRunServer() throws ServerStartException, IOExcept
 							logger.info("Launching npm server process failed. Process result:\n{}", result);
 						}
 					} catch (Throwable t) {
-						ProcessRunner.Result result = server != null ? ThrowingEx.get(server::result) : null;
+						ProcessRunner.Result result = ThrowingEx.get(server::result);
 						logger.debug("Unable to forcibly end the server process. Process result:\n{}", result, t);
 					}
 					throw timeoutException;