remove unneeded if before delete

src/brpc/policy/giano_authenticator.cpp

@@ -39,14 +39,11 @@ GianoAuthenticator::GianoAuthenticator(const baas::CredentialGenerator* gen,
 }
 
 GianoAuthenticator::~GianoAuthenticator() {
-    if (_generator) {
-        delete _generator;
-        _generator = NULL;
-    }
-    if (_verifier) {
-        delete _verifier;
-        _verifier = NULL;
-    }
+    delete _generator;
+    _generator = NULL;
+
+    delete _verifier;
+    _verifier = NULL;
 }
 
 int GianoAuthenticator::GenerateCredential(std::string* auth_str) const {

src/brpc/socket_map.cpp

@@ -156,10 +156,10 @@ SocketMap::~SocketMap() {
             LOG(ERROR) << err.str();
         }
     }
-    if (_this_map_bvar) {
-        delete _this_map_bvar;
-        _this_map_bvar = NULL;
-    }
+
+    delete _this_map_bvar;
+    _this_map_bvar = NULL;
+
     delete _options.socket_creator;
     _options.socket_creator = NULL;
 }