Some error handling and assert improvements, trying to understand #10662

UI/TextureUtil.cpp

@@ -131,8 +131,7 @@ bool ManagedTexture::LoadFromFileData(const uint8_t *data, size_t dataSize, Imag
 		if (image[i])
 			free(image[i]);
 	}
-
-	return true;
+	return texture_ != nullptr;
 }
 
 bool ManagedTexture::LoadFromFile(const std::string &filename, ImageFileType type, bool generateMips) {
@@ -172,4 +171,4 @@ std::unique_ptr<ManagedTexture> CreateTextureFromFileData(Draw::DrawContext *dra
 	ManagedTexture *mtex = new ManagedTexture(draw);
 	mtex->LoadFromFileData(data, size, type, generateMips);
 	return std::move(std::unique_ptr<ManagedTexture>(mtex));
-}
+}