executor: fix puff_zlib_to_file signature

In executor code we commonly use the syscall interface for functions:
return -1 on erorr and set errno.
Use this interface for puff_zlib_to_file.

1 files changed, 3 insertions, 3 deletions

diff --git a/executor/common_linux.h b/executor/common_linux.h
index e0537e062..40d2ad894 100644
--- a/executor/common_linux.h
+++ b/executor/common_linux.h
@@ -2910,9 +2910,9 @@ static int setup_loop_device(long unsigned size, long unsigned compressed_size,
 		goto error_close_memfd;
 	}
 
-	err = puff_zlib_to_file(data, compressed_size, memfd, size);
-	if (err) {
-		debug("setup_loop_device: could not decompress data: %d\n", err);
+	if (puff_zlib_to_file(data, compressed_size, memfd, size)) {
+		err = errno;
+		debug("setup_loop_device: could not decompress data: %d\n", errno);
 		goto error_close_memfd;
 	}