[PATCH] Fix for NullPointerException in MSVSS

[Jeff Martin]

This fixes a null pointer exception which is thrown if MSVSS is called
without setting the vsspath

Index: src/main/org/apache/tools/ant/taskdefs/optional/vss/MSVSS.java
===================================================================
RCS file:
/home/cvspublic/jakarta-ant/src/main/org/apache/tools/ant/taskdefs/optional/
vss/MSVSS.java,v
retrieving revision 1.3
diff -r1.3 MSVSS.java
149c149
<         return new String(m_vssPath);
---
>         return m_vssPath;