Merge branch '3734-pb-competition-cons_pseudoboolean-c-7689-addsymmetryinformation-assertion-tmpvals-null-failed' into 'v91-bugfix'

Resolve "PB Competition: cons_pseudoboolean.c:7689: addSymmetryInformation: Assertion `tmpvals != NULL' failed"

See merge request integer/scip!3481

Author: GioniMexi

src/scip/cons_pseudoboolean.c

@@ -7686,7 +7686,6 @@ SCIP_RETCODE addSymmetryInformation(
       return SCIP_OKAY;
    } /*lint !e788*/
    assert(tmpvars != NULL);
-   assert(tmpvals != NULL);
    for( i = 0; i < tmpnvars; ++i )
       vars[i] = tmpvars[i];
    constant = 0.0;