Automatic code cleanup.

PiperOrigin-RevId: 307115268
diff --git a/third_party/ijar/zip.cc b/third_party/ijar/zip.cc
index cf84325..be87b20 100644
--- a/third_party/ijar/zip.cc
+++ b/third_party/ijar/zip.cc
@@ -132,9 +132,9 @@
   // MAX_BUFFER_SIZE must be bigger than the size of the biggest file in the
   // ZIP. It is set to 2GB here because no one has audited the code for 64-bit
   // cleanliness.
-  static const size_t INITIAL_BUFFER_SIZE = 256 * 1024;  // 256K
-  static const size_t MAX_BUFFER_SIZE = std::numeric_limits<int32_t>::max();
-  static const size_t MAX_MAPPED_REGION = 32 * 1024 * 1024;
+  static constexpr size_t INITIAL_BUFFER_SIZE = 256 * 1024;  // 256K
+  static constexpr size_t MAX_BUFFER_SIZE = std::numeric_limits<int32_t>::max();
+  static constexpr size_t MAX_MAPPED_REGION = 32 * 1024 * 1024;
 
   // These metadata fields are the fields of the ZIP header of the file being
   // processed.