Ignore GCC 6 warnings (#883)
Ignore GCC 6 warnings (#883)

mikesart/imgui,bkaradzic/imgui,ggtucker/imgui,thevaber/imgui,dougbinks/imgui,cmaughan/imgui,cmaughan/imgui,wasikuss/imgui,bkaradzic/imgui,ggtucker/imgui,nProtect/imgui,ocornut/imgui,wflohry/imgui-addons,cmaughan/imgui,Pagghiu/imgui,tom-seddon/imgui,ggtucker/imgui,thevaber/imgui,elect86/imgui,aimotive/imgui-glfw,dougbinks/imgui,wasikuss/imgui,elect86/imgui,burningreggae/imgui,mikesart/imgui,Flix01/imgui,aimotive/imgui-glfw,burningreggae/imgui,nProtect/imgui,nProtect/imgui,cmaughan/imgui,bkaradzic/imgui,wflohry/imgui-addons,Flix01/imgui,Pagghiu/imgui,Flix01/imgui,ocornut/imgui,ocornut/imgui,tom-seddon/imgui