fix __WORDSIZE on x32 sys/user.h
sys/reg.h already had it right as 32, to which it was explicitly
changed when commit 664cd341921007cea52c8891f27ce35927dca378 derived
x32 from x86_64. but the copy exposed in sys/user.h was missed.
diff --git a/arch/x32/bits/user.h b/arch/x32/bits/user.h
index 4073cc0..eac82a1 100644
--- a/arch/x32/bits/user.h
+++ b/arch/x32/bits/user.h
@@ -1,5 +1,5 @@
#undef __WORDSIZE
-#define __WORDSIZE 64
+#define __WORDSIZE 32
typedef struct user_fpregs_struct {
uint16_t cwd, swd, ftw, fop;
