[es6] Correct parsing of regular expression literal flags.

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index 04980193a993c26bb13589b5b3e031bf639545a0..941e57a3893fcaa4d965c70cd82626be7fe58d9e 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -123,7 +123,7 @@ class BytecodeArrayBuilder {
   BytecodeArrayBuilder& CreateArguments(CreateArgumentsType type);
 
   // Literals creation.  Constant elements should be in the accumulator.
-  BytecodeArrayBuilder& CreateRegExpLiteral(int literal_index, Register flags);
+  BytecodeArrayBuilder& CreateRegExpLiteral(int literal_index, int flags);
   BytecodeArrayBuilder& CreateArrayLiteral(int literal_index, int flags);
   BytecodeArrayBuilder& CreateObjectLiteral(int literal_index, int flags);