Use combined assignment contanation operator

diff --git a/run-tests.php b/run-tests.php
index 38d905d26846152fb3ab865907d72ce1fe6485fb..df53645ef2d843964877e39ba2cf4ce1bae5e3c1 100755 (executable)
--- a/run-tests.php
+++ b/run-tests.php
@@ -2924,7 +2924,7 @@ function junit_path_to_classname($file_name) {
                        array_shift($_tmp);
                }
                foreach ($_tmp as $p) {
-                       $ret = $ret . "." . preg_replace(",[^a-z0-9]+,i", ".", $p);
+                       $ret .= "." . preg_replace(",[^a-z0-9]+,i", ".", $p);
                }
                return $ret;
        }