* src/builtin.c (make_pathx_exn): avoid unnecessary alllocation and leak
* src/builtin.c (make_pathx_exn): avoid unnecessary alllocation and leak

We used to call STRDUP for no good reason on the constant error message
returned by PATHX_ERROR and promptly leaked it.

lutter/augeas,mchf/augeas,kunkku/augeas,lutter/augeas,mchf/augeas,mlichvar/augeas,ptoscano/augeas,manandbytes/augeas,ptoscano/augeas,manandbytes/augeas,hercules-team/augeas,pevalme/augeas,ptoscano/augeas,mlichvar/augeas,pevalme/augeas,hercules-team/augeas,kunkku/augeas,kunkku/augeas,mlichvar/augeas,pevalme/augeas,lutter/augeas