source cleanup: remove all custom typedef structs

 - Stick to a single unified way to use structs
 - Make checksrc complain on 'typedef struct {'
 - Allow them in tests, public headers and examples

 - Let MD4_CTX, MD5_CTX, and SHA256_CTX typedefs remain as they actually
   typedef different types/structs depending on build conditions.

Closes #5338

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/doh.h b/lib/doh.h
index c059e5ac9..bbd4c1a65 100644
--- a/lib/doh.h
+++ b/lib/doh.h
@@ -32,10 +32,10 @@
  * and returns a 'Curl_addrinfo *' with the address information.
  */
 
-Curl_addrinfo *Curl_doh(struct connectdata *conn,
-                        const char *hostname,
-                        int port,
-                        int *waitp);
+struct Curl_addrinfo *Curl_doh(struct connectdata *conn,
+                               const char *hostname,
+                               int port,
+                               int *waitp);
 
 CURLcode Curl_doh_is_resolved(struct connectdata *conn,
                               struct Curl_dns_entry **dns);