Fix r37816: SloppyBlockFunctionStatement needs to go to parser_zone_.

Putting SloppyBlockFunctionStatement into local_zone_ was too early. It
needs to go into parser_zone_ because Scope refers to it. It will be
moved back to local_zone_ when we can put Scopes into temporary Zones.

A test (to demonstrate we crash without this CL) will follow in a separate CL.

R=verwaest@chromium.org
BUG=

Review-Url: https://codereview.chromium.org/2170813002
Cr-Commit-Position: refs/heads/master@{#37920}

src/ast/ast.h

@@ -3186,8 +3186,8 @@ class AstNodeFactory final BASE_EMBEDDED {
 
   SloppyBlockFunctionStatement* NewSloppyBlockFunctionStatement(
       Statement* statement, Scope* scope) {
-    return new (local_zone_)
-        SloppyBlockFunctionStatement(local_zone_, statement, scope);
+    return new (parser_zone_)
+        SloppyBlockFunctionStatement(parser_zone_, statement, scope);
   }
 
   CaseClause* NewCaseClause(