GUACAMOLE-101: Collapse StringBuilder append lines, remove extra space.

extensions/guacamole-auth-ldap/src/main/java/org/apache/guacamole/auth/ldap/user/UserService.java

@@ -92,10 +92,8 @@ public class UserService {
             userSearchFilter.append(confService.getUserSearchFilter());
             userSearchFilter.append("(");
             userSearchFilter.append(escapingService.escapeLDAPSearchFilter(usernameAttribute));
-            userSearchFilter.append("=*)");
-            userSearchFilter.append(")");
+            userSearchFilter.append("=*))");
          
-
             // Find all Guacamole users underneath base DN
             LDAPSearchResults results = ldapConnection.search(
                 confService.getUserBaseDN(),