Fix build error caused by previous change.

Author: bshannon

mail/src/main/java/javax/mail/internet/ContentDisposition.java

@@ -104,7 +104,7 @@ public ContentDisposition(String s) throws ParseException {
 
 	// Then parameters ..
 	String rem = h.getRemainder();
-	if (rem != null)
+	if (rem != null) {
             try {
                 list = new ParameterList(rem);
             } catch (ParseException px) {