Fixed build error caused by undefined REF_MAX.

darcs-hash:20060912105606-7659e-4aca878123a8c005d3097c147d41fc38641781b8.gz

libsofia-sip-ua/su/su_alloc.c

@@ -219,6 +219,7 @@ enum {
 #define ALIGNMENT (8)
 #define ALIGN(n) (size_t)(((n) + (ALIGNMENT - 1)) & ~(ALIGNMENT - 1))
 #define SIZEBITS (sizeof (size_t) * 8 - 1)
+#define REF_MAX SIZE_MAX
 
 typedef struct {
   size_t   sua_size:SIZEBITS;	/**< Size of the block */