MAINT: optimize: Fix the Fortran compiler warning:
MAINT: optimize: Fix the Fortran compiler warning:

```
../scipy/optimize/__nnls/nnls.f:128:44:

  128 |       CALL H12 (1,NPP1,NPP1+1,M,A(1,J),1,UP,DUMMY,1,1,0)
      |                                            1
Warning: Rank mismatch in argument ‘c’ at (1) (rank-1 and scalar)
```

ilayn/scipy,perimosocordiae/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,scipy/scipy,Stefan-Endres/scipy,mdhaber/scipy,andyfaff/scipy,Stefan-Endres/scipy,anntzer/scipy,endolith/scipy,Stefan-Endres/scipy,andyfaff/scipy,rgommers/scipy,ilayn/scipy,scipy/scipy,mdhaber/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,endolith/scipy,endolith/scipy,endolith/scipy,scipy/scipy,mdhaber/scipy,rgommers/scipy,anntzer/scipy,ilayn/scipy,anntzer/scipy,WarrenWeckesser/scipy,anntzer/scipy,WarrenWeckesser/scipy,anntzer/scipy,perimosocordiae/scipy,andyfaff/scipy,endolith/scipy,scipy/scipy,mdhaber/scipy,perimosocordiae/scipy,scipy/scipy,andyfaff/scipy,Stefan-Endres/scipy,rgommers/scipy,mdhaber/scipy,endolith/scipy,ilayn/scipy,andyfaff/scipy,rgommers/scipy,ilayn/scipy,andyfaff/scipy,Stefan-Endres/scipy,rgommers/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,ilayn/scipy,mdhaber/scipy,WarrenWeckesser/scipy,scipy/scipy,anntzer/scipy,WarrenWeckesser/scipy