[MANTTASKS-192] display an explicit error message when using a remote repository with a refid which has not been defined instead of NPE

git-svn-id: https://svn.apache.org/repos/asf/maven/ant-tasks/trunk@965226 13f79535-47bb-0310-9956-ffa450edef68
2 files changed
tree: aa0a466cd0068b21b834d0703454a7352be67e2a
  1. src/
  2. build-tests.xml
  3. pom.xml
  4. README.txt