libextractor: Add missing header

Fixes compilation with -Wimplicit-function-declaration

Signed-off-by: Rosen Penev <rosenp@gmail.com>
(cherry-picked from 0860268f22)

libs/libextractor/Makefile

@@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libextractor
 PKG_VERSION:=1.9
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 # ToDo:
 # - package missing optional dependencies: libexiv2, gsf, librpm, smf, tidy
@@ -16,7 +16,7 @@ PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@GNU/$(PKG_NAME)
 PKG_HASH:=f08f257d26c5e9b503f068d6753c8e55cb76f47f73a81da6ed2bba3de3fee2ff
 
-PKG_LICENSE:=GPL-3.0
+PKG_LICENSE:=GPL-3.0-or-later
 PKG_LICENSE_FILES:=COPYING
 PKG_MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
 

libs/libextractor/patches/010-musl.patch

@@ -0,0 +1,13 @@
+diff --git a/src/common/le_architecture.h b/src/common/le_architecture.h
+index b863ddb..713acdd 100644
+--- a/src/common/le_architecture.h
++++ b/src/common/le_architecture.h
+@@ -26,6 +26,8 @@
+ 
+ #if WINDOWS
+ #include <sys/param.h>          /* #define BYTE_ORDER */
++#else
++#include <byteswap.h>
+ #endif
+ 
+ /* This is copied directly from GNUnet headers */