fix xmlrpc-c build on OS X 10.4 (FSBUILD-47)

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8707 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/xmlrpc-c/include/xmlrpc-c/util_int.h

@@ -3,8 +3,12 @@
 
 #include "util.h"
 
+#ifndef MIN
 #define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+#ifndef MAX
 #define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
 
 /* When we deallocate a pointer in a struct, we often replace it with
 ** this and throw in a few assertions here and there. */