clean warnings

engine/font.cpp

@@ -16,7 +16,7 @@ bool Font::load(const char* ttf, int font_size)
         LOG("Font::load loaded");
         auto bitmap = std::make_unique<uint8_t[]>(w*h);
         chars.resize(num_chars);
-        int ret = stbtt_BakeFontBitmap(file.m_data, 0, (float)font_size, bitmap.get(), w, h, start_char, num_chars, chars.data());
+        stbtt_BakeFontBitmap(file.m_data, 0, (float)font_size, bitmap.get(), w, h, start_char, num_chars, chars.data());
         font_tex.create(w, h, GL_R8, GL_RED, bitmap.get());
         file.close();
         return true;