add missing specializations

Author: qunaibit

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/util/CastToJavaDoubleNode.java

@@ -86,6 +86,16 @@ static double doBoolean(boolean x) {
         return x ? 1.0 : 0.0;
     }
 
+    @Specialization
+    static double toInt(int x) {
+        return x;
+    }
+
+    @Specialization
+    static double toLong(long x) {
+        return x;
+    }
+
     @Specialization
     static double toPInt(PInt x,
                     @Cached PRaiseNode raise) {