target-i386: Fix "call im" on x86_64 when executing 32-bit code

Similarly to what is done in 32938e12
for "jmp im", trunc the immediate to 32-bit when not running in 64-bit
mode.
Reported-by: NKevin O'Connor <kevin@koconnor.net>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

target-i386/translate.c

@@ -6259,6 +6259,8 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
             tval += next_eip;
             if (s->dflag == 0)
                 tval &= 0xffff;
+            else if(!CODE64(s))
+                tval &= 0xffffffff;
             gen_movtl_T0_im(next_eip);
             gen_push_T0(s);
             gen_jmp(s, tval);