Handle proper compilation on Mac OS X.

Fix data alignment bug (the original purpose of the code is unclear, though).
patch by Marc Hoffman, mmh pleasantst com

Originally committed as revision 22847 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/cs_test.c

@@ -23,7 +23,6 @@
 #include <unistd.h>
 #include <stdlib.h>
 #include <inttypes.h>
-#include <malloc.h>
 
 #include "swscale.h"
 #include "rgb2rgb.h"
@@ -32,9 +31,6 @@
 #define srcByte 0x55
 #define dstByte 0xBB
 
-#ifdef __APPLE_CC__
-#define memalign(x,y) malloc(y)
-#endif
 
 static int cpu_caps;
 
@@ -64,8 +60,8 @@ static char *args_parse(int argc, char *argv[])
 int main(int argc, char **argv)
 {
 	int i, funcNum;
-	uint8_t *srcBuffer= (uint8_t*)memalign(128, SIZE);
-	uint8_t *dstBuffer= (uint8_t*)memalign(128, SIZE);
+	uint8_t *srcBuffer= (uint8_t*)av_malloc(SIZE);
+	uint8_t *dstBuffer= (uint8_t*)av_malloc(SIZE);
 	int failedNum=0;
 	int passedNum=0;
 	
@@ -85,11 +81,11 @@ int main(int argc, char **argv)
 
 		for(width=32; width<64; width++){
 			int dstOffset;
-			for(dstOffset=128; dstOffset<196; dstOffset++){
+			for(dstOffset=128; dstOffset<196; dstOffset+=4){
 				int srcOffset;
 				memset(dstBuffer, dstByte, SIZE);
 
-				for(srcOffset=128; srcOffset<196; srcOffset++){
+				for(srcOffset=128; srcOffset<196; srcOffset+=4){
 					uint8_t *src= srcBuffer+srcOffset;
 					uint8_t *dst= dstBuffer+dstOffset;
 					char *name=NULL;