Nav: clear navid in NavInitWindow() when window is marked with ImGuiWindowFlags_NoNavInputs. (#787)
Nav: clear navid in NavInitWindow() when window is marked with ImGuiWindowFlags_NoNavInputs. (#787)

(no expected side-effects, maybe consistency, but those NavLastIds[] values would likely have been 0 already)

ggtucker/imgui,nProtect/imgui,ocornut/imgui,ggtucker/imgui,Flix01/imgui,ocornut/imgui,bkaradzic/imgui,nProtect/imgui,nProtect/imgui,Flix01/imgui,bkaradzic/imgui,Flix01/imgui,bkaradzic/imgui,ocornut/imgui,ggtucker/imgui