ShowTestWindow: fixed example app from not displaying when header is collaposed.
ShowTestWindow: fixed example app from not displaying when header is collaposed.

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