bump-pom-scijava: work around 'git diff --quiet --no-index' bug
bump-pom-scijava: work around 'git diff --quiet --no-index' bug

This is a companion patch to 0a4535f(bump-pom-scijava: work around 'git
diff --quiet --no-index' bug).

Signed-off-by: Johannes Schindelin <53fb8db7833fca1e1746dd8592f61048d350f64c@gmx.de>

scijava/scijava-common