common/parser.c: Do not treat zero return code as error
Run_command() would return zero to indicated success so treating it as
error case would completely break command repetition logic, so change
comparinson operator from "less or equal" to "less then"
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>