Merge "Fix one gcc compiler warning"

vp8/common/blockd.h

diff --git a/vp8/common/blockd.h b/vp8/common/blockd.h
index 75dd4f7..db8400a 100644
--- a/vp8/common/blockd.h
+++ b/vp8/common/blockd.h
@@ -169,7 +169,7 @@
         MV  as_mv;
     } mv;
 
-    char partitioning;
+    unsigned char partitioning;
     unsigned char mb_skip_coeff;                                //does this mb has coefficients at all, 1=no coefficients, 0=need decode tokens
     unsigned char dc_diff;
     unsigned char need_to_clamp_mvs;