minor: fix compiler warning

SVN: 22533

rtd_yeastx/source/java/ch/systemsx/cisd/yeastx/etl/DatasetMappingUtil.java

@@ -300,7 +300,7 @@ class DatasetMappingUtil
             FileNotFoundException
     {
         FileInputStream stream = new FileInputStream(mappingFile);
-        List lines = IOUtils.readLines(stream);
+        List<String> lines = IOUtils.readLines(stream);
         IOUtils.closeQuietly(stream);
         return lines;
     }