qmdiEditor: fix crash on load/save when moving fast (162)#175

diegoiast wants to merge 1 commit intomaincodepointerapp/codepointer:mainfrom

162-closing-a-tab-before-content-loaded-causes-a-crashcodepointerapp/codepointer:162-closing-a-tab-before-content-loaded-causes-a-crashCopy head branch name to clipboard