ListBox: Fixed text-baseline offset when using SameLine()+Text() after a labeled ListBox().

Visible in demo->basic->listbox

imgui_demo.cpp

@@ -1289,6 +1289,7 @@ static void ShowDemoWindowWidgets()
             }
             ImGui::EndListBox();
         }
+        ImGui::SameLine(); HelpMarker("Here we are sharing selection state between both boxes.");
 
         // Custom size: use all width, 5 items tall
         ImGui::Text("Full-width:");
@@ -1823,6 +1824,7 @@ static void ShowDemoWindowWidgets()
         static float arr[] = { 0.6f, 0.1f, 1.0f, 0.5f, 0.92f, 0.1f, 0.2f };
         ImGui::PlotLines("Frame Times", arr, IM_ARRAYSIZE(arr));
         ImGui::PlotHistogram("Histogram", arr, IM_ARRAYSIZE(arr), 0, NULL, 0.0f, 1.0f, ImVec2(0, 80.0f));
+        //ImGui::SameLine(); HelpMarker("Consider using ImPlot instead!");
 
         // Fill an array of contiguous float values to plot
         // Tip: If your float aren't contiguous but part of a structure, you can pass a pointer to your first float