gitcamarker: Allow empty commits as markers
gitcamarker: Allow empty commits as markers

Change-Id: Id1ee151400c578e1f2610705d6ab6e777a44fa33
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools