Default compression level is 1, use NOT_DEFINED_COMPRESS for not defined compression algorithm

Author: za-arthur

src/pg_probackup.c

@@ -564,7 +564,7 @@ compress_init(void)
 	if (backup_subcmd != SET_CONFIG)
 	{
 		if (compress_level != DEFAULT_COMPRESS_LEVEL
-			&& compress_alg == NONE_COMPRESS)
+			&& compress_alg == NOT_DEFINED_COMPRESS)
 			elog(ERROR, "Cannot specify compress-level option without compress-alg option");
 	}
 

src/pg_probackup.h

@@ -353,7 +353,7 @@ extern CompressAlg compress_alg;
 extern int		compress_level;
 extern bool		compress_shortcut;
 
-#define DEFAULT_COMPRESS_LEVEL 6
+#define DEFAULT_COMPRESS_LEVEL 1
 
 extern CompressAlg parse_compress_alg(const char *arg);
 extern const char* deparse_compress_alg(int alg);