remove exit code from errorhandler

src/yugecin/opsudance/OpsuDance.java

@@ -44,7 +44,8 @@ public class OpsuDance {
 		try {
 			container.setup();
 		} catch (LWJGLException e) {
-			ErrorHandler.error("could not initialize GL", e, container).showAndExit();
+			ErrorHandler.error("could not initialize GL", e, container).preventContinue().show();
+			System.exit(1);
 		}
 		Exception caughtException = null;
 		try {

src/yugecin/opsudance/errorhandling/ErrorHandler.java

@@ -229,9 +229,4 @@ public class ErrorHandler {
 		return ignoreAndContinue;
 	}
 
-	public void showAndExit() {
-		show();
-		System.exit(1);
-	}
-
 }