Bug#893301: logisim FTBFS with openjdk-9

[Emmanuel Bourg]

Control: tags -1 + patch

Here is a patch fixing this issue.

--- a/src/com/cburch/logisim/gui/log/ComponentSelector.java
+++ b/src/com/cburch/logisim/gui/log/ComponentSelector.java
@@ -279,7 +279,7 @@
                        return true;
                }
 
-               public Enumeration<?> children() {
+               public Enumeration children() {
                        return Collections.enumeration(Collections.emptySet());
                }
        }
--- a/src/com/cburch/logisim/gui/main/SimulationTreeNode.java
+++ b/src/com/cburch/logisim/gui/main/SimulationTreeNode.java
@@ -15,7 +15,7 @@
                return false;
        }
 
-       public abstract Enumeration<?> children();
+       public abstract Enumeration children();
        public abstract boolean getAllowsChildren();
        public abstract TreeNode getChildAt(int childIndex);
        public abstract int getChildCount();