solvsig_verify: error out early if the checksum is finished
solvsig_verify: error out early if the checksum is finished

jsilhan/libsolv,jsilhan/libsolv,jsilhan/libsolv,jsilhan/libsolv,jsilhan/libsolv,JacksonIsaac/libsolv,JacksonIsaac/libsolv,jsilhan/libsolv,JacksonIsaac/libsolv,JacksonIsaac/libsolv,JacksonIsaac/libsolv