Disable the code coverage upload on PHP nightly

PHP nightly does not have XDebug and so cannot upload code coverage.
This check avoids notifying scrutinizer that there is no coverage in
case the PHP nightly job finishes first.

Author: stof

.travis.yml

@@ -19,4 +19,4 @@ install:
 script: phpunit -v --coverage-clover=coverage.clover
 
 after_script:
-  - wget https://scrutinizer-ci.com/ocular.phar && php ocular.phar code-coverage:upload --format=php-clover coverage.clover
+  - if [ "nightly" != "$TRAVIS_PHP_VERSION" ]; then wget https://scrutinizer-ci.com/ocular.phar && php ocular.phar code-coverage:upload --format=php-clover coverage.clover; fi