Cleaned up some debugger stuff on ia32 and x64

src/ia32/macro-assembler-ia32.h

Index: src/ia32/macro-assembler-ia32.h
===================================================================
--- src/ia32/macro-assembler-ia32.h	(revision 2860)
+++ src/ia32/macro-assembler-ia32.h	(working copy)
@@ -338,6 +338,7 @@
 };
 
 
+#ifdef ENABLE_DEBUGGER_SUPPORT
 // The code patcher is used to patch (typically) small parts of code e.g. for
 // debugging and other types of instrumentation. When using the code patcher
 // the exact number of bytes specified must be emitted. Is not legal to emit
@@ -356,6 +357,7 @@
   int size_;  // Number of bytes of the expected patch size.
   MacroAssembler masm_;  // Macro assembler used to generate the code.
 };
+#endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 // -----------------------------------------------------------------------------