Fix lb-format when input is empty
fixes issue exposed in lhcb/Moore!233 (merged). The bug mostly affects the CI check and patch generation, but could in theory affect in place "formatting" of white-space-only files.
Edited by Rosen Matev
fixes issue exposed in lhcb/Moore!233 (merged). The bug mostly affects the CI check and patch generation, but could in theory affect in place "formatting" of white-space-only files.