windows meson: cast to smaller integer type 'unsigned long' from 'void *'

[williamtu]

[87/252] Compiling C object lib/libopenvswitch.a.p/odp-util.c.obj
FAILED: lib/libopenvswitch.a.p/odp-util.c.obj
"clang" "-Ilib\libopenvswitch.a.p" "-Ilib" "-I..\lib" "-I." "-I.." "-Iinclude\openflow" "-I..\include\openflow" "-Iinclude\openvswitch" "-I..\include\openvsw
itch" "-I..\include\windows" "-Iinclude" "-I..\include" "-I..\datapath-windows\include" "-IC:\PTHREADS-BUILT\include" "-Xclang" "-fcolor-diagnostics" "-pipe"
"-D_FILE_OFFSET_BITS=64" "-Wall" "-Winvalid-pch" "-g" "-Wthread-safety" "-Wno-microsoft-enum-forward-reference" "-Wno-unused-function" "-Wno-sometimes-unini
tialized" "-Wno-format" "-Wno-incompatible-pointer-types" "-Werror" "-dM" "-U_MSC_VER" "-D_TIMESPEC_DEFINED" "-D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_SECURE_NO_WA
RNINGS" "-D_CRT_SECURE_NO_DEPRECATE" -MD -MQ lib/libopenvswitch.a.p/odp-util.c.obj -MF "lib\libopenvswitch.a.p\odp-util.c.obj.d" -o lib/libopenvswitch.a.p/od
p-util.c.obj "-c" ../lib/odp-util.c
../lib/odp-util.c:5834:5: error: cast to smaller integer type 'unsigned long' from 'void *' [-Werror,-Wvoid-pointer-to-int-cast]
SCAN_SINGLE("skb_priority(", uint32_t, u32, OVS_KEY_ATTR_PRIORITY);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../lib/odp-util.c:5665:7: note: expanded from macro 'SCAN_SINGLE'
} SCAN_END_SINGLE(ATTR)
^~~~~~~~~~~~~~~~~~~~~
../lib/odp-util.c:5658:9: note: expanded from macro 'SCAN_END_SINGLE'
SCAN_PUT(ATTR, NULL);
^~~~~~~~~~~~~~~~~~~~
../lib/odp-util.c:5601:9: note: expanded from macro 'SCAN_PUT'
SCAN_PUT_ATTR(key, ATTR, skey, FUNC);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../lib/odp-util.c:5489:33: note: expanded from macro 'SCAN_PUT_ATTR'
unsigned long call_fn = (unsigned long)FUNC;
^~~~~~~~~~~~~~~~~~~
../lib/odp-util.c:5834:5: error: cast to smaller integer type 'unsigned long' from 'void *' [-Werror,-Wvoid-pointer-to-int-cast]
SCAN_SINGLE("skb_priority(", uint32_t, u32, OVS_KEY_ATTR_PRIORITY);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../lib/odp-util.c:5665:7: note: expanded from macro 'SCAN_SINGLE'
} SCAN_END_SINGLE(ATTR)
^~~~~~~~~~~~~~~~~~~~~
../lib/odp-util.c:5658:9: note: expanded from macro 'SCAN_END_SINGLE'
SCAN_PUT(ATTR, NULL);
^~~~~~~~~~~~~~~~~~~~
../lib/odp-util.c:5603:13: note: expanded from macro 'SCAN_PUT'
SCAN_PUT_ATTR(mask, ATTR, smask, FUNC);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[williamtu]

use uintptr_t

diff --git a/lib/odp-util.c b/lib/odp-util.c
index 7729a9060..80b879225 100644
--- a/lib/odp-util.c
+++ b/lib/odp-util.c
@@ -5486,7 +5486,7 @@ gtpu_to_attr(struct ofpbuf *a, const void *data_)

 #define SCAN_PUT_ATTR(BUF, ATTR, DATA, FUNC)                      \
     {                                                             \
-        unsigned long call_fn = (unsigned long)FUNC;              \
+        uintptr_t call_fn = (uintptr_t)FUNC;              \
         if (call_fn) {                                            \
             typedef void (*fn)(struct ofpbuf *, const void *);    \
             fn func = FUNC;                                       \