avoid regex problems when output is empty
diff --git a/bundles/org.eclipse.swt/buildSWT.xml b/bundles/org.eclipse.swt/buildSWT.xml
index fd085e7..10c468e 100644
--- a/bundles/org.eclipse.swt/buildSWT.xml
+++ b/bundles/org.eclipse.swt/buildSWT.xml
@@ -370,10 +370,10 @@
<property name="success_msg" value="Success"/>
<property name="fail_msg" value="*** Fail ***"/>
<condition property="m_linux_s390x_test" value="${success_msg}" else="${fail_msg}">
- <matches pattern="${m_linux_s390x_output}*" string="${m_linux_s390x}"/>
+ <matches pattern="x${m_linux_s390x_output}*" string="x${m_linux_s390x}"/>
</condition>
<condition property="m_linux_s390_test" value="${success_msg}" else="${fail_msg}">
- <matches pattern="${m_linux_s390_output}*" string="${m_linux_s390}"/>
+ <matches pattern="x${m_linux_s390_output}*" string="x${m_linux_s390}"/>
</condition>
<echo>-------------------------</echo>
<echo>Status:</echo>
