Core: header cleanup, split realmlist, boost compatibility, cotire, remove stormlib/zlib and stormlib/bzip2 and instead use dep sources

src/common/Cryptography/BigNumber.cpp

@@ -112,7 +112,7 @@ BigNumber BigNumber::operator/=(BigNumber const& bn)
     BN_CTX *bnctx;
 
     bnctx = BN_CTX_new();
-    BN_div(_bn, NULL, _bn, bn._bn, bnctx);
+    BN_div(_bn, nullptr, _bn, bn._bn, bnctx);
     BN_CTX_free(bnctx);
 
     return *this;