Handle KL_SCRYPT in config write.

cgminer.c

@@ -2851,6 +2851,11 @@ void write_config(FILE *fcfg)
 				case KL_DIABLO:
 					fprintf(fcfg, "diablo");
 					break;
+#ifdef USE_SCRYPT
+				case KL_SCRYPT:
+					fprintf(fcfg, "scrypt");
+					break;
+#endif
 			}
 		}
 #ifdef HAVE_ADL