GPU: Fix memory leak in Vulkan command buffer

(cherry picked from commit aeb4309c0eea875686bc488c44e22b58b783e205)

src/gpu/vulkan/SDL_gpu_vulkan.c

@@ -3130,7 +3130,9 @@ static void VULKAN_INTERNAL_DestroyCommandPool(
         SDL_free(commandBuffer->waitSemaphores);
         SDL_free(commandBuffer->signalSemaphores);
         SDL_free(commandBuffer->usedBuffers);
+        SDL_free(commandBuffer->buffersUsedInPendingTransfers);
         SDL_free(commandBuffer->usedTextures);
+        SDL_free(commandBuffer->texturesUsedInPendingTransfers);
         SDL_free(commandBuffer->usedSamplers);
         SDL_free(commandBuffer->usedGraphicsPipelines);
         SDL_free(commandBuffer->usedComputePipelines);