build: Ensure /system unmounted at install start

Account for the possibility that a user has mounted system manually
before installing the FullOTA package.

Change-Id: I97d0540676a7ce98762545e76ecb1a7f6335d204

parent 6d04c879

tools/releasetools/ota_from_target_files

+1 −0

Original line number	Diff line number	Diff line
		@@ -567,6 +567,7 @@ reboot_now("%(bcb_dev)s", "recovery");
		else if get_stage("%(bcb_dev)s") == "3/3" then
		""" % bcb_dev)

		script.AppendExtra("ifelse(is_mounted(\"/system\"), unmount(\"/system\"));")
		device_specific.FullOTA_InstallBegin()

		if OPTIONS.backuptool: