Fix playlist corruption with long blanks (kdenlive-2219).
Fix playlist corruption with long blanks (kdenlive-2219).

zzhhui/mlt,j-b-m/mlt,zzhhui/mlt,siddharudh/mlt,zzhhui/mlt,j-b-m/mlt,xzhavilla/mlt,siddharudh/mlt,mltframework/mlt,j-b-m/mlt,ttill/MLT,zzhhui/mlt,zzhhui/mlt,j-b-m/mlt,zzhhui/mlt,xzhavilla/mlt,ttill/MLT,xzhavilla/mlt,xzhavilla/mlt,zzhhui/mlt,mltframework/mlt,j-b-m/mlt,siddharudh/mlt,mltframework/mlt,wideioltd/mlt,gmarco/mlt-orig,mltframework/mlt,xzhavilla/mlt,wideioltd/mlt,gmarco/mlt-orig,gmarco/mlt-orig,zzhhui/mlt,j-b-m/mlt,ttill/MLT,gmarco/mlt-orig,ttill/MLT,wideioltd/mlt,gmarco/mlt-orig,xzhavilla/mlt,siddharudh/mlt,wideioltd/mlt,wideioltd/mlt,ttill/MLT,wideioltd/mlt,xzhavilla/mlt,xzhavilla/mlt,wideioltd/mlt,siddharudh/mlt,j-b-m/mlt,anba8005/mlt,j-b-m/mlt,anba8005/mlt,wideioltd/mlt,anba8005/mlt,j-b-m/mlt,ttill/MLT,zzhhui/mlt,gmarco/mlt-orig,siddharudh/mlt,wideioltd/mlt,siddharudh/mlt,siddharudh/mlt,anba8005/mlt,ttill/MLT,mltframework/mlt,ttill/MLT,gmarco/mlt-orig,mltframework/mlt,anba8005/mlt,anba8005/mlt,ttill/MLT,mltframework/mlt,xzhavilla/mlt,anba8005/mlt,mltframework/mlt,gmarco/mlt-orig,siddharudh/mlt,gmarco/mlt-orig,mltframework/mlt,anba8005/mlt,mltframework/mlt,j-b-m/mlt,anba8005/mlt