Contribs: fix lua.exe generation

(cherry picked from commit 6cdaecdb6a12afbefd4448dc0dba3d89f416d720)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

contrib/src/lua/rules.mak

@@ -41,7 +41,7 @@ ifdef HAVE_MACOSX
 		-i.orig src/Makefile)
 endif
 ifdef HAVE_WIN32
-	cd $(UNPACK_DIR) && sed -i.orig -e 's/lua luac/lua.exe/' Makefile
+	cd $(UNPACK_DIR) && sed -i.orig -e 's/lua luac/lua.exe luac.exe/' Makefile
 endif
 	cd $(UNPACK_DIR)/src && sed -i.orig \
 		-e 's/CC=/#CC=/' \