[es7] Fix "implement exponentiation operator proposal" for AIX.

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index 15792805e452175a1efe9e27950f69bf1aa114a8..c25b5705d5a871a92e7864edc63696cf7097849e 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -438,7 +438,7 @@ bool ParserTraits::ShortcutNumericLiteralBinaryExpression(
         return true;
       }
       case Token::EXP: {
-        double value = std::pow(x_val, y_val);
+        double value = Pow(x_val, y_val);
         int int_value = static_cast<int>(value);
         *x = factory->NewNumberLiteral(
             int_value == value && value != -0.0 ? int_value : value, pos,