Fix compile error

biopet-tools-extensions/src/main/scala/nl/lumc/sasc/biopet/extensions/tools/BamStats.scala

@@ -43,7 +43,7 @@ class BamStats(val root: Configurable) extends ToolCommandFunction with Referenc
 
   override def beforeGraph() {
     super.beforeGraph()
-    deps :+= bamFile.getAbsolutePath.replaceAll(".bam$", ".bai")
+    deps :+= new File(bamFile.getAbsolutePath.replaceAll(".bam$", ".bai"))
     jobOutputFile = new File(outputDir, ".bamstats.out")
     if (reference == null) reference = referenceFasta()
   }