VM86 EIP masking fix (aka NT5 install fix) (Mike Nordell)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@719 c046a42c-6fe2-441c-8c8c-71466251a162

target-i386/helper.c

@@ -1727,7 +1727,7 @@ static inline void helper_ret_protected(int shift, int is_iret, int addend)
     load_seg_vm(R_FS, new_fs & 0xffff);
     load_seg_vm(R_GS, new_gs & 0xffff);
 
-    env->eip = new_eip;
+    env->eip = new_eip & 0xffff;
     ESP = new_esp;
 }