Alexandre Julliard : dbghelp: Don't require a 16-bit stack for StackWalk.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e42d1a8cc1b1b6b6e1417156cdc17fad250556b1
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=e42d1a8cc1b1b6b6e1417156cdc17fad250556b1

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Wed Jan 27 11:16:45 2010 +0100

dbghelp: Don't require a 16-bit stack for StackWalk.

---

 dlls/dbghelp/cpu_i386.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/dlls/dbghelp/cpu_i386.c b/dlls/dbghelp/cpu_i386.c
index a83f0fa..32a341f 100644
--- a/dlls/dbghelp/cpu_i386.c
+++ b/dlls/dbghelp/cpu_i386.c
@@ -146,7 +146,11 @@ static BOOL i386_stack_walk(struct cpu_stack_walk* csw, LPSTACKFRAME64 frame)
                 goto done_err;
             }
             next_switch = p;
-            if (curr_mode == stm_16bit)
+            if (!next_switch)  /* no 16-bit stack */
+            {
+                curr_switch = 0;
+            }
+            else if (curr_mode == stm_16bit)
             {
                 if (!sw_read_mem(csw, next_switch, &frame32, sizeof(frame32)))
                 {