Mark dither_2x2_{8,4} static to swscale.c

These two tables are not used outside swscale.c even though they are
declared also in yuv2rgb.c.

Originally committed as revision 27736 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/swscale.c

@@ -264,12 +264,12 @@ static unsigned char clip_table[768];
 
 static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);
 
-const uint8_t  __attribute__((aligned(8))) dither_2x2_4[2][8]={
+static const uint8_t  __attribute__((aligned(8))) dither_2x2_4[2][8]={
 {  1,   3,   1,   3,   1,   3,   1,   3, },
 {  2,   0,   2,   0,   2,   0,   2,   0, },
 };
 
-const uint8_t  __attribute__((aligned(8))) dither_2x2_8[2][8]={
+static const uint8_t  __attribute__((aligned(8))) dither_2x2_8[2][8]={
 {  6,   2,   6,   2,   6,   2,   6,   2, },
 {  0,   4,   0,   4,   0,   4,   0,   4, },
 };

libswscale/yuv2rgb.c

@@ -41,8 +41,6 @@
 
 #define DITHER1XBPP // only for MMX
 
-extern const uint8_t dither_2x2_4[2][8];
-extern const uint8_t dither_2x2_8[2][8];
 extern const uint8_t dither_8x8_32[8][8];
 extern const uint8_t dither_8x8_73[8][8];
 extern const uint8_t dither_8x8_220[8][8];