libwepmix: Fix use of possibly unassigned local variable 'data'
http://ci.vala-project.org:8010/builders/vala-staging/builds/965/steps/simple-scan/logs/stdio
libwebpmux.vapi:65.17-65.38: error: use of possibly unassigned local variable `data'
data.bytes = bitstream;
^^^^^^^^^^^^^^^^^^^^^^
libwebpmux.vapi:66.17-66.44: error: use of possibly unassigned local variable `data'
data.size = bitstream.length;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
libwebpmux.vapi:67.17-67.51: error: use of possibly unassigned local variable `data'
return _set_image (data, copy_data);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
libwebpmux.vapi:93.13-93.35: error: use of possibly unassigned local variable `data'
data.bytes = chunk_data;
^^^^^^^^^^^^^^^^^^^^^^^
libwebpmux.vapi:94.13-94.41: error: use of possibly unassigned local variable `data'
data.size = chunk_data.length;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
libwebpmux.vapi:95.13-95.65: error: use of possibly unassigned local variable `data'
return _set_chunk ((uchar[]) fourcc, data, copy_data);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Compilation failed: 6 error(s), 3 warning(s)