[Bug 51790] New: MSI is no longer able to detect correct architecture for a custom action DLL

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51790

Bug ID: 51790
           Summary: MSI is no longer able to detect correct architecture
                    for a custom action DLL
           Product: Wine
           Version: 6.17
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Keywords: regression
          Severity: normal
          Priority: P2
         Component: kernel32
          Assignee: [e-mail]
          Reporter: [e-mail]
   Regression SHA1: 02268cb290493c899b56996405ca7c65a8046e3c
      Distribution: ---

MSI relies on GetBinaryType() to return correct architecture for a custom
action DLL, however GetBinaryType() started to intentionally fail for DLL
files. This for instance leads to inability to run a 32-bit action from a
64-bit installer process.

This essentially breaks any installer in a WoW64 Wine prefix. This bug should
probably have 'major' severity set.