Fix compiler warnings
Fix compiler warnings

dagoodma/qgroundcontrol,UAVenture/qgroundcontrol,ethz-asl/qgc_asl,LIKAIMO/qgroundcontrol,jy723/qgroundcontrol,lis-epfl/qgroundcontrol,hejunbok/qgroundcontrol,RedoXyde/PX4_qGCS,BMP-TECH/qgroundcontrol,TheIronBorn/qgroundcontrol,greenoaktree/qgroundcontrol,remspoor/qgroundcontrol,caoxiongkun/qgroundcontrol,RedoXyde/PX4_qGCS,TheIronBorn/qgroundcontrol,CornerOfSkyline/qgroundcontrol,dagoodma/qgroundcontrol,LIKAIMO/qgroundcontrol,iidioter/qgroundcontrol,jy723/qgroundcontrol,caoxiongkun/qgroundcontrol,Hunter522/qgroundcontrol,iidioter/qgroundcontrol,lis-epfl/qgroundcontrol,fizzaly/qgroundcontrol,kd0aij/qgroundcontrol,ethz-asl/qgc_asl,caoxiongkun/qgroundcontrol,kd0aij/qgroundcontrol,jy723/qgroundcontrol,kd0aij/qgroundcontrol,dagoodma/qgroundcontrol,hejunbok/qgroundcontrol,mihadyuk/qgroundcontrol,CornerOfSkyline/qgroundcontrol,hejunbok/qgroundcontrol,RedoXyde/PX4_qGCS,scott-eddy/qgroundcontrol,dagoodma/qgroundcontrol,cfelipesouza/qgroundcontrol,devbharat/qgroundcontrol,BMP-TECH/qgroundcontrol,LIKAIMO/qgroundcontrol,hejunbok/qgroundcontrol,cfelipesouza/qgroundcontrol,nado1688/qgroundcontrol,caoxiongkun/qgroundcontrol,LIKAIMO/qgroundcontrol,dagoodma/qgroundcontrol,BMP-TECH/qgroundcontrol,greenoaktree/qgroundcontrol,caoxiongkun/qgroundcontrol,devbharat/qgroundcontrol,greenoaktree/qgroundcontrol,jy723/qgroundcontrol,fizzaly/qgroundcontrol,RedoXyde/PX4_qGCS,UAVenture/qgroundcontrol,remspoor/qgroundcontrol,Hunter522/qgroundcontrol,nado1688/qgroundcontrol,remspoor/qgroundcontrol,BMP-TECH/qgroundcontrol,catch-twenty-two/qgroundcontrol,scott-eddy/qgroundcontrol,Hunter522/qgroundcontrol,greenoaktree/qgroundcontrol,catch-twenty-two/qgroundcontrol,dagoodma/qgroundcontrol,LIKAIMO/qgroundcontrol,scott-eddy/qgroundcontrol,fizzaly/qgroundcontrol,jy723/qgroundcontrol,nado1688/qgroundcontrol,iidioter/qgroundcontrol,iidioter/qgroundcontrol,devbharat/qgroundcontrol,mihadyuk/qgroundcontrol,hejunbok/qgroundcontrol,nado1688/qgroundcontrol,mihadyuk/qgroundcontrol,RedoXyde/PX4_qGCS,greenoaktree/qgroundcontrol,CornerOfSkyline/qgroundcontrol,iidioter/qgroundcontrol,ethz-asl/qgc_asl,ethz-asl/qgc_asl,BMP-TECH/qgroundcontrol,UAVenture/qgroundcontrol,hejunbok/qgroundcontrol,fizzaly/qgroundcontrol,CornerOfSkyline/qgroundcontrol,Hunter522/qgroundcontrol,lis-epfl/qgroundcontrol,scott-eddy/qgroundcontrol,scott-eddy/qgroundcontrol,scott-eddy/qgroundcontrol,remspoor/qgroundcontrol,nado1688/qgroundcontrol,CornerOfSkyline/qgroundcontrol,fizzaly/qgroundcontrol,remspoor/qgroundcontrol,caoxiongkun/qgroundcontrol,RedoXyde/PX4_qGCS,BMP-TECH/qgroundcontrol,catch-twenty-two/qgroundcontrol,nado1688/qgroundcontrol,devbharat/qgroundcontrol,lis-epfl/qgroundcontrol,TheIronBorn/qgroundcontrol,mihadyuk/qgroundcontrol,lis-epfl/qgroundcontrol,cfelipesouza/qgroundcontrol,UAVenture/qgroundcontrol,kd0aij/qgroundcontrol,cfelipesouza/qgroundcontrol,greenoaktree/qgroundcontrol,Hunter522/qgroundcontrol,mihadyuk/qgroundcontrol,jy723/qgroundcontrol,catch-twenty-two/qgroundcontrol,cfelipesouza/qgroundcontrol,cfelipesouza/qgroundcontrol,CornerOfSkyline/qgroundcontrol,kd0aij/qgroundcontrol,TheIronBorn/qgroundcontrol,UAVenture/qgroundcontrol,ethz-asl/qgc_asl,catch-twenty-two/qgroundcontrol,mihadyuk/qgroundcontrol,fizzaly/qgroundcontrol,TheIronBorn/qgroundcontrol,LIKAIMO/qgroundcontrol,devbharat/qgroundcontrol,catch-twenty-two/qgroundcontrol,Hunter522/qgroundcontrol,UAVenture/qgroundcontrol,remspoor/qgroundcontrol,iidioter/qgroundcontrol,kd0aij/qgroundcontrol,TheIronBorn/qgroundcontrol,devbharat/qgroundcontrol