PlotLines, PlotHistogram: Ignore NaN values when calculating min/max bounds. (#2485)

docs/CHANGELOG.txt

@@ -49,6 +49,7 @@ Other Changes:
 - GetMouseDragDelta(): also returns the delta on the mouse button released frame. (#2419)
 - GetMouseDragDelta(): verify that mouse positions are valid otherwise returns zero.
 - Inputs: Also add support for horizontal scroll with Shift+Mouse Wheel. (#2424, #1463) [@LucaRood]
+- PlotLines, PlotHistogram: Ignore NaN values when calculating min/max bounds. (#2485)
 - Misc: Added IM_MALLOC/IM_FREE macros mimicking IM_NEW/IM_DELETE so user doesn't need to revert
   to using the ImGui::MemAlloc()/MemFree() calls directly.
 - Examples: OpenGL: Added a dummy GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized

imgui_widgets.cpp

@@ -5577,6 +5577,8 @@ void ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_ge
         for (int i = 0; i < values_count; i++)
         {
             const float v = values_getter(data, i);
+            if (v != v) // Ignore NaN values
+                continue;
             v_min = ImMin(v_min, v);
             v_max = ImMax(v_max, v);
         }