fix UploadStream warning

[JoshMcCullough]

Description

Fixes this warning in the log:

PHP Warning: stream_wrapper_register(): Protocol upload:// is already defined. in /bitnami/suitecrm/public/legacy/include/UploadStream.php on line 151

Motivation and Context

For cleaner log output.

How To Test This

Run SuiteCRM and try to login via the API. Note the warning above appears in the Apache log.

Types of changes

• [ x ] Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Final checklist

• [ x ] My code follows the code style of this project found here.
• My change requires a change to the documentation.
• [ x ] I have read the How to Contribute guidelines.