Merge commit 'ee1ac04d0084' from apple/stable/20200714 into swift/master

Author: git apple-llvm automerger

compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_netbsd.h

@@ -129,6 +129,12 @@ struct __sanitizer_shmid_ds {
   void *_shm_internal;
 };
 
+struct __sanitizer_protoent {
+  char *p_name;
+  char **p_aliases;
+  int p_proto;
+};
+
 struct __sanitizer_netent {
   char *n_name;
   char **n_aliases;