Fix bug where constants were not correctly canonicalized.

lib/compiler/implementation/ssa/codegen.dart

Index: lib/compiler/implementation/ssa/codegen.dart
diff --git a/lib/compiler/implementation/ssa/codegen.dart b/lib/compiler/implementation/ssa/codegen.dart
index f91de80334263c91b8e09dd07330f177e3ae3da9..92b825c704b16b424514ee9c85630da0a4b577bb 100644
--- a/lib/compiler/implementation/ssa/codegen.dart
+++ b/lib/compiler/implementation/ssa/codegen.dart
@@ -831,7 +831,7 @@ class SsaCodeGenerator implements HVisitor {
         node.constant.writeJsCode(buffer, handler);

[ngeoffray, 2012/03/30 08:28:32]

How about this one? Being a num helps you know it's not needed, but that's
something a user of CTC does not have to think about, so please consider my
suggestion of a single entry-point for writing a constant.

[floitsch, 2012/03/30 18:11:49]

Done.

         buffer.add(')');
       } else {
-        node.constant.writeJsCode(buffer, handler);
+        node.constant.writeCanonicalizedJsCode(buffer, handler);
       }
     } else {
       buffer.add(compiler.namer.CURRENT_ISOLATE);