Avoid heap allocations in IPAddress

tools/ipc_fuzzer/fuzzer/fuzzer.cc

Index: tools/ipc_fuzzer/fuzzer/fuzzer.cc
diff --git a/tools/ipc_fuzzer/fuzzer/fuzzer.cc b/tools/ipc_fuzzer/fuzzer/fuzzer.cc
index a8d3c6c4f3801901bf88ad6839c9abca5a47afdd..182b0039dc8448e332e1dd56630f9150010ad34a 100644
--- a/tools/ipc_fuzzer/fuzzer/fuzzer.cc
+++ b/tools/ipc_fuzzer/fuzzer/fuzzer.cc
@@ -1291,7 +1291,7 @@ struct FuzzTraits<net::HostPortPair> {
 template <>
 struct FuzzTraits<net::IPAddress> {
   static bool Fuzz(net::IPAddress* p, Fuzzer* fuzzer) {
-    std::vector<uint8_t> bytes = p->bytes();
+    std::vector<uint8_t> bytes = p->CopyBytesToVector();
     if (!FuzzParam(&bytes, fuzzer))
       return false;
     net::IPAddress ip_address(bytes);