Win32: fix detection of empty directories in is_dir_empty
On Windows XP (not Win7), directories cannot be deleted while a find handle
is open, causing "Deletion of directory '...' failed. Should I try again?"
prompts.
Prior to
19d1e75d "Win32: Unicode file name support (except dirent)",
these failures were silently ignored due to strbuf_free in is_dir_empty
resetting GetLastError to ERROR_SUCCESS.
Close the find handle in is_dir_empty so that git doesn't block deletion
of the directory even after all other applications have released it.
Reported-by: John Chen <john0312@gmail.com>
Signed-off-by: Karsten Blees <blees@dcon.de>