Do not report EOF from wxLZMAInputStream when the requested output buffer was
filled. wxInputStream::Peek() only puts the byte back while the stream remains
in the no-error state, so eagerly setting EOF consumes the final byte. This
matches wxZlibInputStream, which defers EOF when inflate() fills the buffer.

--- a/src/common/lzmastream.cpp
+++ b/src/common/lzmastream.cpp
@@ -137,7 +137,8 @@ size_t wxLZMAInputStream::OnSysRead(void* outbuf, size_t size)
                 continue;
 
             case LZMA_STREAM_END:
-                m_lasterror = wxSTREAM_EOF;
+                if ( m_stream->avail_out )
+                    m_lasterror = wxSTREAM_EOF;
                 continue;
 
             case LZMA_FORMAT_ERROR: