Fix dereferencing of end iterator in PPMQ decompressor #77
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Incorrect usage of
std::list::erasecould lead to a crash in the PPMQ decompressor when trying to delete the last item in a list. Issue found with afl++, test case to reproduce:id%253A000151,sig%253A06,src%253A004458,time%253A12244939684,execs%253A3330820005,op%253Ahavoc,rep%253A1.zip