[LU-400] patch unroll can't handle empty commits

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 1.8.6
• Affects Version/s: Lustre 1.8.6
• Severity: 3
• Assignee: Brian Murrell (Inactive)
• Reporter: Brian Murrell (Inactive)

Description

The patch unrolling tool, build/extract_patches, currently will create an empty dpatch if a commit is empty. This causes dpatch some heartburn, so just skip empty commits.