[PATCH] ieframe: Fix position vs. length check in the go_forward() helper.

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=105574

Your paranoid android.


=== debian11 (32 bit report) ===

ieframe:
webbrowser.c:3341: Test failed: GoForward failed: 80004005
webbrowser.c:3342: Test failed: expected Invoke_BEFORENAVIGATE2
webbrowser.c:3345: Test failed: expected Invoke_COMMANDSTATECHANGE_NAVIGATEBACK_TRUE
webbrowser.c:3352: Test failed: expected Invoke_COMMANDSTATECHANGE_NAVIGATEFORWARD_FALSE
webbrowser: Timeout

=== debian11 (32 bit Chinese:China report) ===

ieframe:
webbrowser.c:3341: Test failed: GoForward failed: 80004005
webbrowser.c:3342: Test failed: expected Invoke_BEFORENAVIGATE2
webbrowser.c:3345: Test failed: expected Invoke_COMMANDSTATECHANGE_NAVIGATEBACK_TRUE
webbrowser.c:3352: Test failed: expected Invoke_COMMANDSTATECHANGE_NAVIGATEFORWARD_FALSE
webbrowser: Timeout

=== debian11 (32 bit WoW report) ===

ieframe:
webbrowser.c:3341: Test failed: GoForward failed: 80004005
webbrowser.c:3342: Test failed: expected Invoke_BEFORENAVIGATE2
webbrowser.c:3345: Test failed: expected Invoke_COMMANDSTATECHANGE_NAVIGATEBACK_TRUE
webbrowser.c:3352: Test failed: expected Invoke_COMMANDSTATECHANGE_NAVIGATEFORWARD_FALSE
webbrowser: Timeout

=== debian11 (64 bit WoW report) ===

ieframe:
webbrowser.c:3341: Test failed: GoForward failed: 80004005
webbrowser.c:3342: Test failed: expected Invoke_BEFORENAVIGATE2
webbrowser.c:3345: Test failed: expected Invoke_COMMANDSTATECHANGE_NAVIGATEBACK_TRUE
webbrowser.c:3352: Test failed: expected Invoke_COMMANDSTATECHANGE_NAVIGATEFORWARD_FALSE
webbrowser: Timeout