Define __STDC_LIMIT_MACROS for UINT8_MAX in C++.

git-svn-id: http://svn.drobilla.net/lad/trunk/sratom@4770 a436a847-0d15-0410-975c-d299462d15a1

src/sratom.c

@@ -14,6 +14,8 @@
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
+#define __STDC_LIMIT_MACROS 1
+
 #include <assert.h>
 #include <ctype.h>
 #include <stdio.h>