fix method missing error when multiplying by map by list

src/main/groovy/bpipe/PipelineCategory.groovy

@@ -322,7 +322,7 @@ class PipelineCategory {
             // Map filteredBranches = branches.keySet().collectEntries { key -> 
             //   [key, Utils.box(branches[key]).removeAll { !(it in inputs) }]
             //}
-            splitOnMap(branches,segments)
+            splitOnMap(input, branches,segments)
         }
 
         log.info "Joiners for pipeline " + pipeline.hashCode() + " = " + pipeline.joiners

tests/split_on_map_in_branch/cleanup.sh

@@ -0,0 +1 @@
+rm -f *.txt.*

tests/split_on_map_in_branch/run.sh

@@ -0,0 +1,7 @@
+source ../testsupport.sh
+
+run test.txt
+
+exists test.txt.world test.txt.1.hello
+
+true

tests/split_on_map_in_branch/test.groovy

@@ -0,0 +1,22 @@
+
+hello = {
+    exec """
+        cp $input $output
+    """
+}
+
+world = {
+    exec """
+        cp $input $output
+    """
+}
+
+samples = [ 'foo' : 'test.txt' ]
+sizes = ["1"]
+
+run {
+    sizes * [
+        hello  +
+        samples * [ world ]
+    ]
+}