_LoadFontImpl: params.fontConfig.FontDataOwnedByAtlas = true

Fix for an issue mentioned at ocornut/imgui@98636f4#r172496863

The issue is that fontData.data is freed immediately afterwards, but imgui/FreeType may still need to read the TTF buffer later (particularly with the new baked-font workflow).

Before the commit, imgui always copied the buffer when FontDataOwnedByAtlas == false, which unintentionally masked this bug.

Author: pthom

src/hello_imgui/impl/hello_imgui_font.cpp

@@ -110,9 +110,8 @@ namespace HelloImGui
         if (params.insideAssets)
         {
             AssetFileData fontData = LoadAssetFileData(fontFilename.c_str());
-            params.fontConfig.FontDataOwnedByAtlas = false;
+            params.fontConfig.FontDataOwnedByAtlas = true;
             font = ImGui::GetIO().Fonts->AddFontFromMemoryTTF(fontData.data, (int)fontData.dataSize, fontSize, &params.fontConfig);
-            FreeAssetFileData(&fontData);
         }
         else
         {