[x265] Issue #534: Warning in x265 code (multicoreware/x265)

[0brad0]

New issue 534: Warning in x265 code
https://bitbucket.org/multicoreware/x265/issues/534/warning-in-x265-code

Brad Smith:

There is one and only one warning throughout the build but it repeats many times.  

```c
In file included from /home/ports/pobj/x265-3.3/x265_3.3/source/encoder/ratecontrol.cpp:36:
In file included from /home/ports/pobj/x265-3.3/x265_3.3/source/encoder/encoder.h:30:
/home/ports/pobj/x265-3.3/x265_3.3/source/common/scalinglist.h:36:12: warning: declaration shadows a variable in namespace 'x265' [-Wshadow]
    enum { NUM_SIZES = 4 };            // 4x4, 8x8, 16x16, 32x32
           ^
/home/ports/pobj/x265-3.3/x265_3.3/source/common/cudata.h:51:5: note: previous declaration is here
    NUM_SIZES
    ^
1 warning generated.
```

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