Fix bug in obj_decrepit.c

Interestingly, Windows caught this with:
..\decrepit\obj\obj_decrepit.c(33) : warning C4090: 'function' : different 'const' qualifiers

However, the value of |name| isn't const, only the thing that it points
to. So this seems like a bug in MSVC, but I'm ok with it this time.

Change-Id: I076f98339cb0b669a4f592fba89aafc0a580efc4
Reviewed-on: https://boringssl-review.googlesource.com/7404
Reviewed-by: David Benjamin <davidben@google.com>
diff --git a/decrepit/obj/obj_decrepit.c b/decrepit/obj/obj_decrepit.c
index b1255c7..a03ea0f 100644
--- a/decrepit/obj/obj_decrepit.c
+++ b/decrepit/obj/obj_decrepit.c
@@ -30,7 +30,7 @@
   const struct wrapped_callback *wrapped = (struct wrapped_callback *)arg;
   OBJ_NAME obj_name;
 
-  memset(&name, 0, sizeof(name));
+  memset(&obj_name, 0, sizeof(obj_name));
   obj_name.type = OBJ_NAME_TYPE_CIPHER_METH;
   obj_name.name = name;
 
@@ -42,7 +42,7 @@
   const struct wrapped_callback *wrapped = (struct wrapped_callback*) arg;
   OBJ_NAME obj_name;
 
-  memset(&name, 0, sizeof(name));
+  memset(&obj_name, 0, sizeof(obj_name));
   obj_name.type = OBJ_NAME_TYPE_MD_METH;
   obj_name.name = name;