handle case if REQUEST_URI is not set
handle case if REQUEST_URI is not set

like on CLI

Qoto/hhvm-newrelic-ext,craig-russell/hhvm-newrelic-ext,craig-russell/hhvm-newrelic-ext,chregu/hhvm-newrelic-ext,Qoto/hhvm-newrelic-ext,Qoto/hhvm-newrelic-ext,deivisonarthur/hhvm-newrelic-ext,chregu/hhvm-newrelic-ext,craig-russell/hhvm-newrelic-ext,effeks/hhvm-newrelic-ext,KMK-ONLINE/hhvm-newrelic-ext,KMK-ONLINE/hhvm-newrelic-ext,KMK-ONLINE/hhvm-newrelic-ext,chregu/hhvm-newrelic-ext,deivisonarthur/hhvm-newrelic-ext,effeks/hhvm-newrelic-ext,effeks/hhvm-newrelic-ext,deivisonarthur/hhvm-newrelic-ext