message: Update bgfg_gaussmix2.cpp
  1e-12 -> DBL_EPSILON
diff: @@ -696,7 +696,7 @@ public:
  // Renormalize weights. In the special case that the pixel does
  // not agree with any modes, set weights to zero (a new mode will be added below).
  float invWeight = 0.f;
  - if (fabs(totalWeight) > 1e-12f) {
  + if (fabs(totalWeight) > DBL_EPSILON) {
  invWeight = 1.f/totalWeight;
  }
  @@ -906,7 +906,7 @@ void BackgroundSubtractorMOG2Impl::getBackgroundImage_intern(OutputArray backgro
  break;
  }
  float invWeight = 0.f;
  - if (fabs(totalWeight) > 1e-12f) {
  + if (fabs(totalWeight) > DBL_EPSILON) {
  invWeight = 1.f/totalWeight;
  }
  