Merge pull request #684 from brevilo/brevilo-define-missing-v111

Define OPENSSL_VERSION_1_1_1 on systems where it doesn't (yet) exist

src/apps/relay/mainrelay.c

@@ -39,6 +39,8 @@
 #if (defined LIBRESSL_VERSION_NUMBER && OPENSSL_VERSION_NUMBER == 0x20000000L)
 #undef OPENSSL_VERSION_NUMBER
 #define OPENSSL_VERSION_NUMBER 0x1000107FL
+#elif (!defined OPENSSL_VERSION_1_1_1)
+#define OPENSSL_VERSION_1_1_1 0x10101000L
 #endif
 
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