Allow custom textures to load from unicode paths.

Source/Core/VideoCommon/HiresTextures.cpp

@@ -94,7 +94,15 @@ PC_TexFormat GetHiresTex(const std::string& filename, unsigned int* pWidth, unsi
 	int height;
 	int channels;
 
-	u8 *temp = SOIL_load_image(textureMap[filename].c_str(), &width, &height, &channels, SOIL_LOAD_RGBA);
+	File::IOFile file;
+	file.Open(textureMap[filename], "rb");
+	u8* buffer = new u8[file.GetSize()];
+	file.ReadBytes(buffer, file.GetSize());
+
+	u8* temp = SOIL_load_image_from_memory(buffer, (int)file.GetSize(), &width, &height, &channels, SOIL_LOAD_RGBA);
+	file.Close();
+	delete[] buffer;
+
 	if (temp == nullptr)
 	{
 		ERROR_LOG(VIDEO, "Custom texture %s failed to load", textureMap[filename].c_str());