[openwrt/openwrt] tools: squashfs3-lzma: generate reproducible output

[LEDE Commits]

dangole pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/f1f87ef3508c1e168b686d72e57166515999c313

commit f1f87ef3508c1e168b686d72e57166515999c313
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Fri May 12 02:17:21 2023 +0200

    tools: squashfs3-lzma: generate reproducible output
    
    Always initialize header with zeros as otherwise we may end up with
    uninitialized memory which ruins reproducibility.
    
    Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
 tools/squashfs3-lzma/patches/150-fix-unitialized-memory.patch | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tools/squashfs3-lzma/patches/150-fix-unitialized-memory.patch b/tools/squashfs3-lzma/patches/150-fix-unitialized-memory.patch
new file mode 100644
index 0000000000..ad3b820894
--- /dev/null
+++ b/tools/squashfs3-lzma/patches/150-fix-unitialized-memory.patch
@@ -0,0 +1,11 @@
+--- a/squashfs-tools/mksquashfs.c
++++ b/squashfs-tools/mksquashfs.c
+@@ -1822,7 +1822,7 @@ int main(int argc, char *argv[])
+ {
+ 	struct stat buf, source_buf;
+ 	int i;
+-	squashfs_super_block sBlk;
++	squashfs_super_block sBlk = {};
+ 	char *b, *root_name = NULL;
+ 	int be, nopad = FALSE, keep_as_directory = FALSE, orig_be;
+ 	squashfs_inode inode;