do not crash if question is invalid
do not crash if question is invalid

Signed-off-by: David A. Cuadrado <9e86d6d2f3901859480d56aec66da07500c6a5df@gmail.com>

gravityrail/shapado,ooohiroyukiooo/shapado,stan/shapado,umamao/umamao,stan/shapado,stan/shapado,quango/mc-shapado,sinnerex/zoorab,cctuan/shapado_g,binarycode/shapado,cctuan/shapado_g,umamao/umamao,amyhua/QnA,quango/quango,ooohiroyukiooo/shapado,ooohiroyukiooo/shapado,mofaq/quango-classic,gravityrail/shapado,ricodigo/shapado,sinnerex/zoorab,mofaq/quango-classic,StephenSullivan/quango-junk,quango/shapado-temp,ooohiroyukiooo/shapado,ricodigo/shapado,10xEngineer/shapado,quango/mc-shapado,quango/quango,quango/pegasus,amyhua/QnA,NazarK/shapado,quango/pegasus,mofaq/quango-classic,quango/quango,NazarK/shapado,StephenSullivan/quango-junk,gravityrail/shapado,umamao/umamao,stan/shapado,mofaq/quango-classic,StephenSullivan/quango-junk,anuragsolanki/ofri-Haus,10xEngineer/shapado,quango/shapado-temp,sinnerex/zoorab,10xEngineer/shapado,NazarK/shapado,StephenSullivan/quango-junk,quango/pegasus,amyhua/QnA,ricodigo/shapado,binarycode/shapado,cctuan/shapado_g,quango/quango,anuragsolanki/ofri-Haus