[parser] Ensure asm.js modules always allocate context.

src/ast/scopeinfo.cc

Index: src/ast/scopeinfo.cc
diff --git a/src/ast/scopeinfo.cc b/src/ast/scopeinfo.cc
index da0dd76635d3df280f219428551dedab4fcb2788..ff50489694ddc2d3322b3c874ea0f7887230b547 100644
--- a/src/ast/scopeinfo.cc
+++ b/src/ast/scopeinfo.cc
@@ -445,6 +445,7 @@ int ScopeInfo::ContextLength() {
                        (scope_type() == BLOCK_SCOPE && CallsSloppyEval() &&
                         is_declaration_scope()) ||
                        (scope_type() == FUNCTION_SCOPE && CallsSloppyEval()) ||
+                       (scope_type() == FUNCTION_SCOPE && IsAsmModule()) ||
                        scope_type() == MODULE_SCOPE;
 
     if (has_context) {