Speculative fix for a reported issue that sometimes '_bindings' is not generated in a small number of builds.
This should be safe now that it is not a statically held reference, and will be released when the Project instance is GC'ed.
diff --git a/compiler/src/main/java/org/apache/royale/compiler/internal/projects/RoyaleProject.java b/compiler/src/main/java/org/apache/royale/compiler/internal/projects/RoyaleProject.java
index 11f89b5..0613ffe 100644
--- a/compiler/src/main/java/org/apache/royale/compiler/internal/projects/RoyaleProject.java
+++ b/compiler/src/main/java/org/apache/royale/compiler/internal/projects/RoyaleProject.java
@@ -2622,12 +2622,12 @@
     }
 
 
-    private WeakHashMap<IClassDefinition, BindingDatabase> bindingMap = new WeakHashMap<IClassDefinition, BindingDatabase>();
+    private HashMap<IClassDefinition, BindingDatabase> bindingMap = new HashMap<IClassDefinition, BindingDatabase>();
     /**
      * Support for access to BindingData from the class definition as key.
      * @return
      */
-    public WeakHashMap<IClassDefinition, BindingDatabase> getBindingMap(){
+    public HashMap<IClassDefinition, BindingDatabase> getBindingMap(){
         return bindingMap;
     }
 
diff --git a/compiler/src/main/java/org/apache/royale/compiler/projects/IRoyaleProject.java b/compiler/src/main/java/org/apache/royale/compiler/projects/IRoyaleProject.java
index b003466..0836a82 100644
--- a/compiler/src/main/java/org/apache/royale/compiler/projects/IRoyaleProject.java
+++ b/compiler/src/main/java/org/apache/royale/compiler/projects/IRoyaleProject.java
@@ -250,6 +250,6 @@
      * Support for access to BindingData from the class definition as key.
      * @return
      */
-    WeakHashMap<IClassDefinition, BindingDatabase> getBindingMap();
+    HashMap<IClassDefinition, BindingDatabase> getBindingMap();
 
 }