Subzero: Reduce the amount of #ifdef'd code.

src/IceAssemblerX8632.h

Index: src/IceAssemblerX8632.h
diff --git a/src/IceAssemblerX8632.h b/src/IceAssemblerX8632.h
index 9d8c042d4ad52f9c72eb92ddbfcdcbd87a3af469..bd77e292fc44cca423baef7feda4d2e52b34f02c 100644
--- a/src/IceAssemblerX8632.h
+++ b/src/IceAssemblerX8632.h
@@ -252,11 +252,12 @@ class Label {
 
 public:
   Label() : position_(0), num_unresolved_(0) {
-#ifndef NDEBUG
+#ifdef NDEBUG
+    return;
+#endif // !NDEBUG
     for (int i = 0; i < kMaxUnresolvedBranches; i++) {
       unresolved_near_positions_[i] = -1;
     }
-#endif // !NDEBUG
   }
 
   ~Label() {}