squashfs-tools: update to 4.5

update from 4.4 to 4.5
commits:
- https://github.com/plougher/squashfs-tools/compare/4.4...4.4-git.1
  - incorporates gcc10 patch
- https://github.com/plougher/squashfs-tools/compare/4.4-git.1...4.5

packages/sysutils/squashfs-tools/package.mk

@@ -3,8 +3,8 @@
 # Copyright (C) 2017-present Team LibreELEC (https://libreelec.tv)
 
 PKG_NAME="squashfs-tools"
-PKG_VERSION="4.4"
-PKG_SHA256="a7fa4845e9908523c38d4acf92f8a41fdfcd19def41bd5090d7ad767a6dc75c3"
+PKG_VERSION="4.5"
+PKG_SHA256="b9e16188e6dc1857fe312633920f7d71cc36b0162eb50f3ecb1f0040f02edddd"
 PKG_LICENSE="GPL"
 PKG_SITE="https://github.com/plougher/squashfs-tools"
 PKG_URL="https://github.com/plougher/squashfs-tools/archive/${PKG_VERSION}.tar.gz"

packages/sysutils/squashfs-tools/patches/squashfs-tools-4.4-fno-common.patch

@@ -1,11 +0,0 @@
---- a/squashfs-tools/mksquashfs.h
-+++ b/squashfs-tools/mksquashfs.h
-@@ -143,7 +143,7 @@ struct append_file {
- #endif
- 
- extern struct cache *reader_buffer, *fragment_buffer, *reserve_cache;
--struct cache *bwriter_buffer, *fwriter_buffer;
-+extern struct cache *bwriter_buffer, *fwriter_buffer;
- extern struct queue *to_reader, *to_deflate, *to_writer, *from_writer,
- 	*to_frag, *locked_fragment, *to_process_frag;
- extern struct append_file **file_mapping;