run_tests.sh: use '/usr/bin/env bash' to locate bash.

diff --git a/re2c/run_tests.sh.in b/re2c/run_tests.sh.in
index 9d65ff9530128371e5b6ae7ae3efe6dc0c9a3928..dfa7978c64d689638886c97781db75d72e6cde70 100644 (file)
--- a/re2c/run_tests.sh.in
+++ b/re2c/run_tests.sh.in
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # somewhat portable way to detect CPU count
 detect_cpu_count () {