Fix long-standing bug in the umv padding code that left the first 8 to 16 bytes  of the first row in the full reconstruction buffer uninitialized (and also  wrote 8 bytes past the end of the buffer, not that valgrind ever complained).
Fix long-standing bug in the umv padding code that left the first 8 to 16 bytes
 of the first row in the full reconstruction buffer uninitialized (and also
 wrote 8 bytes past the end of the buffer, not that valgrind ever complained).


git-svn-id: 8dbf393e6e9ab8d4979d29f9a341a98016792aa6@13909 0101bb08-14d6-0310-b084-bc0e0c8e3800

Distrotech/libtheora,Distrotech/libtheora,Distrotech/libtheora,Distrotech/libtheora,KTXSoftware/theora,Distrotech/libtheora,KTXSoftware/theora,KTXSoftware/theora,KTXSoftware/theora,KTXSoftware/theora