Add missing #ifdef to lithium-gap-resolver-ia32.cc. This fixes the GYP-based

64-bit Mac build.
Review URL: http://codereview.chromium.org/6728035

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7463 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ia32/lithium-gap-resolver-ia32.cc

@@ -27,6 +27,8 @@
 
 #include "v8.h"
 
+#if defined(V8_TARGET_ARCH_IA32)
+
 #include "ia32/lithium-gap-resolver-ia32.h"
 #include "ia32/lithium-codegen-ia32.h"
 
@@ -460,3 +462,5 @@ void LGapResolver::EmitSwap(int index) {
 #undef __
 
 } }  // namespace v8::internal
+
+#endif  // V8_TARGET_ARCH_IA32