message: Fix minor logic warning.
diff: @@ -96,7 +96,7 @@ io::sstream& CodeGenerator::generateProlog(io::sstream& out, ShaderType type,
  out << '\n';
  if (mTargetApi == TargetApi::VULKAN ||
  mTargetApi == TargetApi::METAL ||
  - mTargetApi == TargetApi::OPENGL && mShaderModel == ShaderModel::GL_CORE_41) {
  + (mTargetApi == TargetApi::OPENGL && mShaderModel == ShaderModel::GL_CORE_41)) {
  out << "#define FILAMENT_HAS_FEATURE_TEXTURE_GATHER\n";
  }
  