[vala/0.40] testrunner: Reset $run_prefix before generating next test script

[Rico Tzschichholz <ricotz src gnome org>]

commit 53851ff52b8a99efa2a18fc9ffb5473fadad4a12
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Oct 27 15:21:30 2018 +0200

    testrunner: Reset $run_prefix before generating next test script

 tests/testrunner.sh | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/tests/testrunner.sh b/tests/testrunner.sh
index 6025cac0c..44fbd78cf 100755
--- a/tests/testrunner.sh
+++ b/tests/testrunner.sh
@@ -157,6 +157,7 @@ SOURCEFILES=
 for testfile in "$@"; do
        rm -f prepare check
        echo 'set -e' >> prepare
+       run_prefix=""
 
        case "$testfile" in
        *.vala)