[PATCH v4 0/1] MR3190: kernelbase: Check if locale is NULL before using it in Internal_EnumDateFormats().

[Zhiyi Zhang (＠zhiyi)]

Initialize the calendars variable after checking if locale is NULL before using it to avoid NULL
pointer references. Fix a Excel 2016 crash when formatting dates with the custom format 'ddd'.

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  v4: kernelbase: Check if locale is NULL before using it in Internal_EnumDateFormats().
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/3190