commit 0605801d8523648622fc2176fd0422d3d5a6ad57
from: Stefan Sperling <stsp@stsp.name>
date: Sun Mar 11 11:44:13 2018 UTC

check read() return value properly in read_meta_file()

commit - 7ac97322017b91dbd1c5468717efc62243a851df
commit + 0605801d8523648622fc2176fd0422d3d5a6ad57
blob - ae61678471cf7d1a0be8eb2f6793a23954d2637e
blob + a84d489d174231aa2398640506134304ea5d1ba7
--- lib/worktree.c
+++ lib/worktree.c
@@ -114,7 +114,8 @@ read_meta_file(char **content, const char *path_got, c
 
 	n = read(fd, *content, sb.st_size);
 	if (n != sb.st_size) {
-		err = got_error_from_errno();
+		err = (n == -1 ? got_error_from_errno() :
+		    got_error(GOT_ERR_WORKTREE_META));
 		goto done;
 	}
 	if ((*content)[sb.st_size - 1] != '\n') {