Popups: calling OpenPopup() on already open popup doesn't close it's child (#126)
Popups: calling OpenPopup() on already open popup doesn't close it's child (#126)

Fixed previous commit.

cmaughan/imgui,emoon/imgui,elect86/imgui,ocornut/imgui,wangshijin/imgui,nmlgc/imgui,xunmengfeng/imgui,benoitjacquier/imgui,rxantos/imgui,thennequin/imgui,Flix01/imgui,burningreggae/imgui,ggtucker/imgui,wasikuss/imgui,aimotive/imgui-glfw,kylawl/imgui,usagi/imguixx,mikesart/imgui,ggtucker/imgui,rxantos/imgui,tom-seddon/imgui,tpoechtrager/imgui,bkaradzic/imgui,ocornut/imgui,dougbinks/imgui,sakishum/imgui,thennequin/imgui,mikesart/imgui,twigletguy/imgui,nProtect/imgui,nProtect/imgui,sakishum/imgui,rmoorman/imgui,ocornut/imgui,gyakoo/imgui,shaggytwodope/imgui,aimotive/imgui-glfw,GHF/imgui,ghassanpl/imgui,redblobgames/imgui,tpoechtrager/imgui,xythobuz/imgui,ggtucker/imgui,thevaber/imgui,seanmiddleditch/imgui,nmlgc/imgui,cmaughan/imgui,luiseduardohdbackup/imgui,cmaughan/imgui,Flix01/imgui,wasikuss/imgui,bagobor/imgui,dougbinks/imgui,cmaughan/imgui,bkaradzic/imgui,xunmengfeng/imgui,shaggytwodope/imgui,andresv/imgui,luiseduardohdbackup/imgui,Psybrus/imgui,xythobuz/imgui,gyakoo/imgui,benoitjacquier/imgui,neshume/imgui,Pagghiu/imgui,twigletguy/imgui,GHF/imgui,wflohry/imgui-addons,bkaradzic/imgui,tom-seddon/imgui,burningreggae/imgui,elect86/imgui,ghassanpl/imgui,usagi/imguixx,seanmiddleditch/imgui,Psybrus/imgui,thevaber/imgui,zho7611/imgui,redblobgames/imgui,emoon/imgui,nProtect/imgui,wflohry/imgui-addons,Pagghiu/imgui,zho7611/imgui,bagobor/imgui,Flix01/imgui,andresv/imgui,wangshijin/imgui,kylawl/imgui,rmoorman/imgui,neshume/imgui