Fix 32-bit builds after r163471

* dfg/DFGOSRExitCompilerCommon.cpp:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@163473 268f45cc-cd09-0410-ab3c-d52691b4dbfc
diff --git a/Source/JavaScriptCore/dfg/DFGOSRExitCompilerCommon.cpp b/Source/JavaScriptCore/dfg/DFGOSRExitCompilerCommon.cpp
index 97d8a18..f90eb62 100644
--- a/Source/JavaScriptCore/dfg/DFGOSRExitCompilerCommon.cpp
+++ b/Source/JavaScriptCore/dfg/DFGOSRExitCompilerCommon.cpp
@@ -160,6 +160,7 @@
     jit.store32(AssemblyHelpers::TrustedImm32(locationBits), AssemblyHelpers::tagFor((VirtualRegister)(JSStack::ArgumentCount)));
 }
 
+#if ENABLE(GGC)
 static void osrWriteBarrier(CCallHelpers& jit, GPRReg owner, GPRReg scratch1, GPRReg scratch2)
 {
     AssemblyHelpers::Jump definitelyNotMarked = jit.genericWriteBarrier(owner, scratch1, scratch2);
@@ -179,6 +180,7 @@
 
     definitelyNotMarked.link(&jit);
 }
+#endif // ENABLE(GGC)
 
 void adjustAndJumpToTarget(CCallHelpers& jit, const OSRExitBase& exit)
 {