[PATCH] common-user: Really fix i386 calls to safe_syscall_set_errno_tail

[Richard Henderson]

Brown bag time: offset 0 from esp is the return address,
offset 4 is the first argument.

Fixes: d7478d4229f0 ("common-user: Fix tail calls to 
safe_syscall_set_errno_tail")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

Ho hum.  I'm disappointed that our CI didn't catch this,
despite cross-i386-user.  And I'm disappointed that I
didn't run a full manual build on an i386 vm to catch
it myself.  I plan on committing this directly.

---
 common-user/host/i386/safe-syscall.inc.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common-user/host/i386/safe-syscall.inc.S 
b/common-user/host/i386/safe-syscall.inc.S
index 9c45e56e480..db2ed098394 100644
--- a/common-user/host/i386/safe-syscall.inc.S
+++ b/common-user/host/i386/safe-syscall.inc.S
@@ -120,7 +120,7 @@ safe_syscall_end:
         pop     %ebp
         .cfi_adjust_cfa_offset -4
         .cfi_restore ebp
-        mov     %eax, (%esp)
+        mov     %eax, 4(%esp)
         jmp     safe_syscall_set_errno_tail
 
         .cfi_endproc
-- 
2.25.1