Addressing security concerns.

-) 0x7f (Backspace) isn't a printable character.
-) use sizeof(var) instead of sizeof(type).

1 files changed, 1 insertions, 1 deletions

diff --git a/src/core/json/json_reader.c b/src/core/json/json_reader.c
index 774faa5f23..5ea4e9569c 100644
--- a/src/core/json/json_reader.c
+++ b/src/core/json/json_reader.c
@@ -93,7 +93,7 @@ static void json_reader_set_null(grpc_json_reader* reader) {
 /* Call this function to initialize the reader structure. */
 void grpc_json_reader_init(grpc_json_reader* reader,
                            grpc_json_reader_vtable* vtable, void* userdata) {
-  memset(reader, 0, sizeof(grpc_json_reader));
+  memset(reader, 0, sizeof(*reader));
   reader->vtable = vtable;
   reader->userdata = userdata;
   json_reader_string_clear(reader);