Fix typo in the in place std::variant<> extension

We of course want to do this for non-trivial types as mentioned in the
comment above, not for trivial types...

src/common/bitsery/ext/in-place-variant.h

@@ -51,7 +51,7 @@ class InPlaceVariant : public StdVariant<Overloads...> {
             // Reinitializing nontrivial types may be expensive especially when
             // they reference heap data, so if `data` is already holding the
             // requested variant then we'll deserialize into the existing object
-            if constexpr (std::is_trivial_v<TElem>) {
+            if constexpr (!std::is_trivial_v<TElem>) {
                 if (auto item = std::get_if<TElem>(&data)) {
                     this->serializeType(des, *item);
                     return;