Refactor smaller things

src/backend/core/Mem.hpp

@@ -142,7 +142,7 @@ private:
   friend struct AI;
   friend struct RSP;
   friend struct Core;
-  u8 isviewer[ISVIEWER_SIZE]{};
+  std::array<u8, ISVIEWER_SIZE> isviewer{};
   std::string sramPath{};
   mio::mmap_sink saveData{};
   int mmioSize{}, flashSize{};

src/backend/core/mmio/PI.cpp

@@ -269,11 +269,9 @@ template <> void PI::BusWrite<u32, false>(u32 addr, u32 val) {
           break;
         case CART_ISVIEWER_FLUSH: {
           if (val < CART_ISVIEWER_SIZE) {
-            char* message = (char*)malloc(val + 1);
-            memcpy(message, mem.isviewer, val);
-            message[val] = '\0';
-            printf("%s", message);
-            free(message);
+            std::string message(val + 1, 0);
+            std::copy(mem.isviewer.begin(), mem.isviewer.begin() + val, message.begin());
+            Util::print("{}", message);
           } else {
             Util::panic("ISViewer buffer size is emulated at {} bytes, but received a flush command for {} bytes!", CART_ISVIEWER_SIZE, val);
           }