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07c413637e
kernel32 functions can be called during process-attach. The same must be true for kernel32_vista. Wine's msvcrt calls GetUserDefaultLocaleName in kernel32_vista during process attach, which calls RtlLcidToLocaleName in ntdll_vista. If that function is delay-loaded (which is probably not allowed anyway during process-attach), the dll will not be initialized, the default user locale is 0 and RtlLcidToLocaleName fails.
Wine code doesn't check for failure and instead continues copying an uninitialized string buffer into the heap, causing heap corruption.
After removing the (redundant) add_delay_importlibs entry, this doesn't happen any longer.
This reverts commit 4f5478d. There is no effect on memory usage, because we load ntdll_vista anyway. See CORE-13361.