message: imDrawList: PathArcTo() returns when passed zero radius.
diff: @@ -694,14 +694,11 @@ void ImDrawList::PathArcToFast(const ImVec2& centre, float radius, int a_min_of_
  circle_vtx_builds = true;
  }
  - if (a_min_of_12 > a_max_of_12)
  - return;
  - if (radius == 0.0f)
  + if (radius == 0.0f || a_min_of_12 > a_max_of_12)
  {
  _Path.push_back(centre);
  + return;
  }
  - else
  - {
  _Path.reserve(_Path.Size + (a_max_of_12 - a_min_of_12 + 1));
  for (int a = a_min_of_12; a <= a_max_of_12; a++)
  {
  @@ -709,12 +706,14 @@ void ImDrawList::PathArcToFast(const ImVec2& centre, float radius, int a_min_of_
  _Path.push_back(ImVec2(centre.x + c.x * radius, centre.y + c.y * radius));
  }
  }
  -}
  void ImDrawList::PathArcTo(const ImVec2& centre, float radius, float amin, float amax, int num_segments)
  {
  if (radius == 0.0f)
  + {
  _Path.push_back(centre);
  + return;
  + }
  _Path.reserve(_Path.Size + (num_segments + 1));
  for (int i = 0; i <= num_segments; i++)
  {
  