fix input type mismatch in osc. block
fix input type mismatch in osc. block

walterbender/musicblocks,Hrishi1999/musicblocks,eohomegrownapps/musicblocks,walterbender/musicblocks,Hrishi1999/musicblocks,walterbender/musicblocks,eohomegrownapps/musicblocks,eohomegrownapps/musicblocks,Hrishi1999/musicblocks