Most SIMD implementations need 16 byte alignment

git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@20 632fc199-4ca6-4c93-a231-07263d6284db

jmemmgr.c

@@ -70,7 +70,11 @@ extern char * getenv JPP((const char * name));
  */
 
 #ifndef ALIGN_SIZE		/* so can override from jconfig.h */
+#ifndef WITH_SIMD
 #define ALIGN_SIZE  SIZEOF(double)
+#else
+#define ALIGN_SIZE  16 /* Most SIMD implementations require this */
+#endif
 #endif
 
 /*