oldpath is wchar_t, so use arraysize, not sizeof.

net/socket/ssl_test_util.cc

Index: net/socket/ssl_test_util.cc
diff --git a/net/socket/ssl_test_util.cc b/net/socket/ssl_test_util.cc
index 7e73f1e800189188b3b33d40b1fc3c8161397139..763031f414003635bd8ceb8522f8e93c67b0f5e1 100644
--- a/net/socket/ssl_test_util.cc
+++ b/net/socket/ssl_test_util.cc
@@ -177,7 +177,7 @@ void AppendToPythonPath(const FilePath& dir) {
   const wchar_t kPythonPath[] = L"PYTHONPATH";
   // FIXME(dkegel): handle longer PYTHONPATH variables
   wchar_t oldpath[4096];
-  if (GetEnvironmentVariable(kPythonPath, oldpath, sizeof(oldpath)) == 0) {
+  if (GetEnvironmentVariable(kPythonPath, oldpath, arraysize(oldpath)) == 0) {
     SetEnvironmentVariableW(kPythonPath, dir.value().c_str());
   } else if (!wcsstr(oldpath, dir.value().c_str())) {
     std::wstring newpath(oldpath);