Initialize un-initialized variable that breaks wasm tests.

src/typing-asm.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/typing-asm.h"
 
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
@@ skipping 25 matching lines @@
 
 
 AsmTyper::AsmTyper(Isolate* isolate, Zone* zone, Script* script,
                    FunctionLiteral* root)
     : zone_(zone),
       isolate_(isolate),
       script_(script),
       root_(root),
       valid_(true),
       allow_simd_(false),
+      property_info_(NULL),
       intish_(0),
       stdlib_types_(zone),
       stdlib_heap_types_(zone),
       stdlib_math_types_(zone),
 #define V(NAME, Name, name, lane_count, lane_type) \
   stdlib_simd_##name##_types_(zone),
       SIMD128_TYPES(V)
 #undef V
           global_variable_type_(HashMap::PointersMatch,
                                 ZoneHashMap::kDefaultHashMapCapacity,
@@ skipping 1314 matching lines @@
     computed_type_->Print();
     PrintF("Expected type: ");
     expected_type_->Print();
 #endif
     FAIL(expr, msg);
   }
   expected_type_ = save;
 }
 }  // namespace internal
 }  // namespace v8