git-grep-blame: strip spaces from front and back of author
git-grep-blame: strip spaces from front and back of author

Signed-off-by: Yan Han Pang <2a3dbd0474bc7e70adfd773b05f6c3249124ff3d@users.noreply.github.com>

yanhan/bin-src,yanhan/bin-src,yanhan/bin-src,yanhan/bin-src