Fix: log instance is null

src/main/java/com/sheepit/client/main/Worker.java

@@ -152,6 +152,9 @@ public class Worker {
 		config.setDetectGPUs(!no_gpu_detection);
 		config.setIncompatibleProcess(incompatibleProcess);
 		
+		// set a temporary log instance, in case there is a log call between here and config/setting merge
+		Log.setInstance(config);
+		
 		if (sharedDownloadsDir != null) {
 			File dir = new File(sharedDownloadsDir);
 			if (dir.exists() == false && dir.mkdirs() == false) {