Subzero: Fix compilation error in MINIMAL=1 or NOASSERT=1 mode.

src/IceAssembler.h

 //===- subzero/src/IceAssembler.h - Integrated assembler --------*- C++ -*-===//
 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Modified by the Subzero authors.
 //
 //===----------------------------------------------------------------------===//
 //
 //                        The Subzero Code Generator
@@ skipping 78 matching lines @@
 
   bool HasEnsuredCapacity;
   bool hasEnsuredCapacity() const { return HasEnsuredCapacity; }
 #else  // NDEBUG
   class EnsureCapacity {
     EnsureCapacity(const EnsureCapacity &) = delete;
     EnsureCapacity &operator=(const EnsureCapacity &) = delete;
 
   public:
     explicit EnsureCapacity(AssemblerBuffer *Buffer) {
-      if (Buffer->cursor() >= buffer->limit())
-        buffer->extendCapacity();
+      if (Buffer->cursor() >= Buffer->limit())
+        Buffer->extendCapacity();
     }
   };
 
   // When building the C++ tests, assertion code is enabled. To allow
   // asserting that the user of the assembler buffer has ensured the
   // capacity needed for emitting, we add a dummy method in non-debug mode.
   bool hasEnsuredCapacity() const { return true; }
 #endif // NDEBUG
 
   // Returns the position in the instruction stream.
@@ skipping 117 matching lines @@
 protected:
   // Buffer's constructor uses the Allocator, so it needs to appear after it.
   // TODO(jpp): dependencies on construction order are a nice way of shooting
   // yourself in the foot. Fix this.
   AssemblerBuffer Buffer;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEASSEMBLER_H_