Fix pop push optimization to work with partial snapshots (correct...

src/arm/stub-cache-arm.cc

Index: src/arm/stub-cache-arm.cc
===================================================================
--- src/arm/stub-cache-arm.cc	(revision 4222)
+++ src/arm/stub-cache-arm.cc	(working copy)
@@ -923,7 +923,7 @@
   //  -- lr    : return address
   // -----------------------------------
   SharedFunctionInfo* function_info = function->shared();
-  if (false && function_info->HasCustomCallGenerator()) {
+  if (function_info->HasCustomCallGenerator()) {
     CustomCallGenerator generator =
         ToCData<CustomCallGenerator>(function_info->function_data());
     return generator(this, object, holder, function, name, check);