[regexp] Properly handle HeapNumbers in AdvanceStringIndex

src/builtins/builtins-regexp-gen.h

Index: src/builtins/builtins-regexp-gen.h
diff --git a/src/builtins/builtins-regexp-gen.h b/src/builtins/builtins-regexp-gen.h
index 7d6315d68f3ebddc22d30b145e2664fa05df6577..eb4c117fc4155a23a7aeeeeef2649ab46e4fa6b7 100644
--- a/src/builtins/builtins-regexp-gen.h
+++ b/src/builtins/builtins-regexp-gen.h
@@ -89,7 +89,7 @@ class RegExpBuiltinsAssembler : public CodeStubAssembler {
   Node* RegExpExec(Node* context, Node* regexp, Node* string);
 
   Node* AdvanceStringIndex(Node* const string, Node* const index,
-                           Node* const is_unicode);
+                           Node* const is_unicode, bool is_fastpath);
 
   void RegExpPrototypeMatchBody(Node* const context, Node* const regexp,
                                 Node* const string, const bool is_fastpath);