Plot: Fixed divide-by-zero in PlotLines() when passing a count of 1. (#2387) [@Lectem]

docs/CHANGELOG.txt

@@ -47,6 +47,7 @@ Other Changes:
 - TabBar: Fixed a crash when using BeginTabBar() recursively (didn't affect docking). (#2371)
 - TabBar: Added extra mis-usage error recovery. Past the assert, common mis-usage don't lead to
   hard crashes any more, facilitating integration with scripting languages. (#1651)
+- Plot: Fixed divide-by-zero in PlotLines() when passing a count of 1. (#2387) [@Lectem]
 - Log/Capture: Fixed extraneous leading carriage return.
 - Log/Capture: Fixed an issue when empty string on a new line would not emit a carriage return.
 - Log/Capture: Fixed LogXXX functions 'auto_open_depth' parameter being treated as an absolute

imgui_widgets.cpp

@@ -5343,7 +5343,8 @@ void ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_ge
 
     RenderFrame(frame_bb.Min, frame_bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
 
-    if (values_count > 0)
+    const int values_count_min = (plot_type == ImGuiPlotType_Lines) ? 2 : 1;
+    if (values_count >= 1)//values_count_min)
     {
         int res_w = ImMin((int)frame_size.x, values_count) + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);
         int item_count = values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0);