Please the compiler

src/v8_typed_array.cc

@@ -390,6 +390,8 @@ class TypedArray {
       case v8::kExternalDoubleArray: return "Float64Array";
     }
     abort();
+    // Please the compiler
+    return "";
   }
 };
 
@@ -485,7 +487,7 @@ int valueToCType(v8::Handle<v8::Value> value) {
 
 template <>
 float valueToCType(v8::Handle<v8::Value> value) {
-  return value->NumberValue();
+  return static_cast<float>(value->NumberValue());
 }
 
 template <>