[BUG] in scaling when neurons don't have names

[dokato]

Example:

> testneurons <- readRDS('testdata/testneurons.rds')
> names(testneurons) <- NULL
> scoresaba <- nblast_allbyall(testneurons,
+                              version=2,
+                              normalisation = 'normalised')
> scoresaba
<0 x 0 matrix>
attr(,"scaled:scale")
numeric(0)