external/neon: -fsanitize=shift

Change-Id: I82255efc3a4fbcb07b6f747af6ef81124a5fb96f

external/neon/UnpackedTarball_neon.mk

@@ -21,6 +21,7 @@ $(eval $(call gb_UnpackedTarball_add_patches,neon,\
 	external/neon/neon.patch \
 	external/neon/neon_ne_set_request_flag.patch \
 	external/neon/neon_with_gnutls.patch \
+	external/neon/ubsan.patch \
 ))
 
 # vim: set noet sw=4 ts=4:

external/neon/ubsan.patch

+--- src/ne_compress.c
++++ src/ne_compress.c
+@@ -81,7 +81,7 @@
+ };
+ 
+ /* Convert 'buf' to unsigned int; 'buf' must be 'unsigned char *' */
+-#define BUF2UINT(buf) (((buf)[3]<<24) + ((buf)[2]<<16) + ((buf)[1]<<8) + (buf)[0])
++#define BUF2UINT(buf) (((unsigned)((buf)[3])<<24) + ((buf)[2]<<16) + ((buf)[1]<<8) + (buf)[0])
+ 
+ #define ID1 0x1f
+ #define ID2 0x8b