Fixed EXT-6423(normal) - Windows viewer spends a minute clearing cache when there is no cache

Problem description:
The code that purges cache does not expect any folders there, error occurs when it tries to delete a file, which is actually a folder. To handle an error the code sleeps for 1 second and tries to delete the file 4 more times(sleeping for 1 second after each try).
Fix info:
Using LLFile::isDir to skip directories and only delete files.

Reviewed by Vadim Savchuk - https://codereview.productengine.com/secondlife/r/239/

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branch : product-engine

0 files changed, 0 insertions, 0 deletions