Misleading YesYessilentNoNever-dlg Never-btn when no Notepad++ app-wnd behind

[xomx]

Fix notepad-plus-plus/notepad-plus-plus#16626

The Never button of the updater dialog needs to be disabled if there is no Notepad++ messages receiving capable window behind to fulfill the NPPM_DISABLEAUTOUPDATE command.

Other small fixes:

• some nullptr inits
• logging possible ShellExecute failure
• instead of always returning 0 (aka success) at the winmain exit, return also the possible ShellExecute WIN32 failure code

[donho]

@xomx

The Never button of the updater dialog needs to be disabled if there is no Notepad++ messages receiving capable window behind to fulfill the NPPM_DISABLEAUTOUPDATE command.

OK. But this enhancement has nothing to do with our conversation here: notepad-plus-plus/notepad-plus-plus#16626 (comment)

[xomx]

@donho

But this enhancement has nothing to do with our conversation here: notepad-plus-plus/notepad-plus-plus#16626 (comment)

Yes (it is related to another comment there: notepad-plus-plus/notepad-plus-plus#16626 (comment) )

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Maybe(?) you confused it with my NSIS-related commit notepad-plus-plus/notepad-plus-plus@719ca33 there preceding my words

Sorry, I don't really follow you - could you elaborate ?

Just submitted a patch that illustrates what I meant.

in notepad-plus-plus/notepad-plus-plus#16626 (comment)