fix to allow for diffs of unary ops to go through variable mapping

6 jobs for master in 2 minutes and 22 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #9094
build_linux_32

00:00:41

passed #9095
build_linux_64

00:01:25

passed #9098
macOS
build_macOS

00:02:16

passed #9096
build_windows_32

00:01:55

passed #9097
build_windows_64

00:01:31

 
  Prepare
passed #9099
aggregate_builds

00:00:04