Fix compile error

shiva/src/main/scala/nl/lumc/sasc/biopet/pipelines/shiva/ShivaVariantcalling.scala

@@ -84,7 +84,7 @@ class ShivaVariantcalling(val root: Configurable) extends QScript
   def biopetScript(): Unit = {
     if (inputBams.isEmpty) {
       Logging.addError("No input bams found")
-      inputBams = Map("test", new File("."))
+      inputBams = Map("test" -> new File("."))
     }
     if (callers.isEmpty) Logging.addError("must select at least 1 variantcaller, choices are: " + ShivaVariantcalling.callersList(this).map(_.name).mkString(", "))
     if (!callers.exists(_.mergeVcfResults)) Logging.addError("must select at least 1 variantcaller where merge_vcf_results is true")