auth/Auth.h: prefer prefix ++operator for non-primitive types

Prefer prefix ++operator for non-primitive types like iterators for
performance reasons. Prefix ++/-- operators avoid creating a temporary
copy.

Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>

diff --git a/src/auth/Auth.h b/src/auth/Auth.h
index 4dc1d63c93d6588eca4279500fe70ca658e5497d..0adc9009221e2ab5ea0466ec3c9dad0e85af844d 100644 (file)
--- a/src/auth/Auth.h
+++ b/src/auth/Auth.h
@@ -209,12 +209,12 @@ struct RotatingSecrets {
   }
   ExpiringCryptoKey& current() {
     map<uint64_t, ExpiringCryptoKey>::iterator p = secrets.begin();
-    p++;
+    ++p;
     return p->second;
   }
   const ExpiringCryptoKey& current() const {
     map<uint64_t, ExpiringCryptoKey>::const_iterator p = secrets.begin();
-    p++;
+    ++p;
     return p->second;
   }
   ExpiringCryptoKey& next() {