Need to write a '0' bit at the end of transforms.
Need to write a '0' bit at the end of transforms.

Also convert an 'if' to 'assert'.

Change-Id: Ia1129ad9ddb027c27b4f4fc1da4bbaf53a0a8f76

ya7lelkom/libwebp,Tekserve/libwebp,abwiz0086/webm.libwebp,gshORTON/webm.libwebp,matanbs/webm.libwebp,kalli123/webm.libwebp,yohunl/libwebp,kim42083/webm.libwebp,jacklicn/libwebp,ericmckean/webm.libwebp,jiehu5114/libwebp,rxl194/libwebp,rxl194/libwebp,reimaginemedia/webm.libwebp,Maria1099/webm.libwebp,altogother/webm.libwebp,appunite/libwebp,jiehu5114/libwebp,keane83/BLE_IM,abwiz0086/webm.libwebp,cysp/libwebp,ttyangf/libwebp,iniwf/webm.libwebp,zofuthan/libwebp,rxl194/libwebp,Aexyn/libwebp,gshORTON/webm.libwebp,appunite/libwebp,kim42083/webm.libwebp,zofuthan/libwebp,altogother/webm.libwebp,cysp/libwebp,appunite/libwebp,jiehu5114/libwebp,ttyangf/libwebp,iniwf/webm.libwebp,kleopatra999/webm.libwebp,zofuthan/libwebp,Suvarna1488/webm.libwebp,redengineer/libwebp,Distrotech/libwebp,dumganhar/libwebp,imazen/libwebp,Acidburn0zzz/webm.libwebp,Maria1099/webm.libwebp,Tekserve/libwebp,Maria1099/webm.libwebp,yohunl/libwebp,kalli123/webm.libwebp,ttyangf/libwebp,ya7lelkom/libwebp,dumganhar/libwebp,zofuthan/libwebp,webmproject/libwebp,kalli123/webm.libwebp,abwiz0086/webm.libwebp,webmproject/libwebp,ericmckean/webm.libwebp,kleopatra999/webm.libwebp,kleopatra999/webm.libwebp,cysp/libwebp,webmproject/libwebp,Aexyn/libwebp,jacklicn/libwebp,reimaginemedia/webm.libwebp,kim42083/webm.libwebp,Tekserve/libwebp,keane83/BLE_IM,cysp/libwebp,zofuthan/libwebp,gshORTON/webm.libwebp,ttyangf/libwebp,matanbs/webm.libwebp,ya7lelkom/libwebp,PKRoma/libwebp,imazen/libwebp,reimaginemedia/webm.libwebp,Suvarna1488/webm.libwebp,yohunl/libwebp,PKRoma/libwebp,kalli123/webm.libwebp,appunite/libwebp,ya7lelkom/libwebp,redengineer/libwebp,Acidburn0zzz/webm.libwebp,ericmckean/webm.libwebp,ericmckean/webm.libwebp,gshORTON/webm.libwebp,matanbs/webm.libwebp,PKRoma/libwebp,ttyangf/libwebp,Acidburn0zzz/webm.libwebp,jacklicn/libwebp,kim42083/webm.libwebp,rxl194/libwebp,comoyo/gonzo-libwebp,comoyo/gonzo-libwebp,kim42083/webm.libwebp,Aexyn/libwebp,altogother/webm.libwebp,gshORTON/webm.libwebp,jiehu5114/libwebp,Distrotech/libwebp,Suvarna1488/webm.libwebp,yohunl/libwebp,abwiz0086/webm.libwebp,abwiz0086/webm.libwebp,Acidburn0zzz/webm.libwebp,redengineer/libwebp,iniwf/webm.libwebp,kleopatra999/webm.libwebp,altogother/webm.libwebp,webmproject/libwebp,Suvarna1488/webm.libwebp,redengineer/libwebp,keane83/BLE_IM,matanbs/webm.libwebp,yohunl/libwebp,reimaginemedia/webm.libwebp,comoyo/gonzo-libwebp,imazen/libwebp,jacklicn/libwebp,Maria1099/webm.libwebp,PKRoma/libwebp,Suvarna1488/webm.libwebp,appunite/libwebp,keane83/BLE_IM,appunite/libwebp,comoyo/gonzo-libwebp,Aexyn/libwebp,kleopatra999/webm.libwebp,imazen/libwebp,dumganhar/libwebp,Aexyn/libwebp,rxl194/libwebp,Tekserve/libwebp,reimaginemedia/webm.libwebp,Maria1099/webm.libwebp,PKRoma/libwebp,jiehu5114/libwebp,comoyo/gonzo-libwebp,ya7lelkom/libwebp,webmproject/libwebp,PKRoma/libwebp,Acidburn0zzz/webm.libwebp,iniwf/webm.libwebp,redengineer/libwebp,imazen/libwebp,iniwf/webm.libwebp,matanbs/webm.libwebp,kalli123/webm.libwebp,keane83/BLE_IM,Distrotech/libwebp,comoyo/gonzo-libwebp,altogother/webm.libwebp,jacklicn/libwebp,comoyo/gonzo-libwebp,ericmckean/webm.libwebp