add newline char when two lines are concatenated

lib/groupio.c

@@ -329,7 +329,7 @@ static /*@null@*/struct commonio_entry *merge_group_entries (
 	}
 
 	/* Concatenate the 2 lines */
-	new_line_len = strlen (gr1->line) + strlen (gr2->line) +1;
+	new_line_len = strlen (gr1->line) + strlen (gr2->line) +2;
 	new_line = (char *)malloc ((new_line_len + 1) * sizeof(char*));
 	if (NULL == new_line) {
 		errno = ENOMEM;