This gets rid of the following warning:
```
CMake Warning (dev) at /usr/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:441 (message):
The package name passed to `find_package_handle_standard_args` (PkgConfig)
does not match the name of the calling package (HarfBuzz). This can lead
to problems in calling code that expects `find_package` result variables
(e.g., `_FOUND`) to follow a certain pattern.
Call Stack (most recent call first):
/usr/share/cmake/Modules/FindPkgConfig.cmake:114 (find_package_handle_standard_args)
aseprite/cmake/FindHarfBuzz.cmake:33 (include)
CMakeLists.txt:173 (find_package)
This warning is for project developers. Use -Wno-dev to suppress it.
```
By applying the following change:
407fa892d9
The file could use further updates based on the upstream version.
Thorbjørn Lindeijer
David Capello
Azamat H. Hackimov