Fixed data loss bug

Fixed a bug which made Dual remove lines that start with a comment in the hosts file.

src/com/luca0n/dual/common/Dual.java

@@ -155,9 +155,12 @@ public class Dual {
 			String line = lines[x];
 			boolean keepLine = true;
 			// Check if this line is a comment.
-			if (line.startsWith("#"))
+			if (line.startsWith("#")){
-				// Ignore this line.
+				// Ignore this line, but add it to the updatedLines list
+				// in order to avoid data loss.
+				updatedLines.add(line);
 				continue;
+			}
 			
 			String[] contents = line.split("#");
 			// Check if this line was auto-generated by this program.