Update V8 to r4851 as required by WebKit r61121
Change-Id: Ib01b7c8e38d5b82b254192fc06365aa5b85780c5
diff --git a/src/data-flow.cc b/src/data-flow.cc
index 4e7620a..55d8582 100644
--- a/src/data-flow.cc
+++ b/src/data-flow.cc
@@ -318,6 +318,9 @@
Variable* loop_var = init->target()->AsVariableProxy()->AsVariable();
if (loop_var == NULL || !loop_var->IsStackAllocated()) return NULL;
+ // Don't try to get clever with const or dynamic variables.
+ if (loop_var->mode() != Variable::VAR) return NULL;
+
// The initial value has to be a smi.
Literal* init_lit = init->value()->AsLiteral();
if (init_lit == NULL || !init_lit->handle()->IsSmi()) return NULL;