fix solaris build

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@7447 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/xmlrpc-c/src/xmlrpc_builddecomp.c

@@ -28,7 +28,7 @@ typedef double va_double;
 #define VA_LIST_COPY(dest,src) memcpy((dest), (src), sizeof(va_list))
 #else
 #if __sun
-#define VA_LIST_COPY(dest,src) (*(dest) = *(src))
+#define VA_LIST_COPY(dest,src) va_copy((dest),(src))
 #else
 #define VA_LIST_COPY(dest,src) ((dest) = (src))
 #endif