[consider merging] Bugfix for LayoutToNetlistReader

testdata/algo/l2n_reader_6.l2n

@@ -0,0 +1,6 @@
+#%l2n-klayout
+W(TOP)
+U(0.001)
+H(I B(info))
+H(W B(warning))
+H(E B(error))

testdata/algo/l2n_reader_au_6.l2n

@@ -0,0 +1,18 @@
+#%l2n-klayout
+top(TOP)
+unit(0.001)
+
+# Layer section
+# This section lists the mask layers (drawing or derived) and their connections.
+
+# Mask layers
+
+# Mask layer connectivity
+
+# Log entries
+message(info description(info))
+message(warning description(warning))
+message(error description(error))
+
+# Circuit section
+# Circuits are the hierarchical building blocks of the netlist.

testdata/algo/l2n_writer_au_3.txt

@@ -0,0 +1,18 @@
+#%l2n-klayout
+top(TOP)
+unit(0.001)
+
+# Layer section
+# This section lists the mask layers (drawing or derived) and their connections.
+
+# Mask layers
+
+# Mask layer connectivity
+
+# Log entries
+message(info description(info))
+message(warning description(warning))
+message(error description(error))
+
+# Circuit section
+# Circuits are the hierarchical building blocks of the netlist.

testdata/algo/l2n_writer_au_3s.txt

@@ -0,0 +1,6 @@
+#%l2n-klayout
+W(TOP)
+U(0.001)
+H(I B(info))
+H(W B(warning))
+H(E B(error))