fix repo_lookup_deparray() corner case when looking for post-marker deps
fix repo_lookup_deparray() corner case when looking for post-marker deps

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