Merge pull request #9153 from gilles-peskine-arm/oid-limits-2.28

2.28 only: Fix the build without check_config.h (inclusion of limits.h)

programs/test/udp_proxy.c

@@ -35,6 +35,8 @@
 #define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
 #endif /* MBEDTLS_PLATFORM_C */
 
+#include <limits.h>
+
 #if !defined(MBEDTLS_NET_C)
 int main(void)
 {