Fix unused but set variables (#25876)

Author: 4JustMe4

.github/last_commit.txt

@@ -1 +1 @@
-7a9abfb04d596ae64b42a4c2af5d196b0c9f57fb
+b997686248fd02a04de35b15816f27cf320eb67e

src/client/coordination/coordination.cpp

@@ -1341,7 +1341,7 @@ class TSessionContext : public TThrRefBase {
                 return;
             }
 
-            if (auto* op = FindSentRequest<TPingOp>(SessionSelfPingReqId)) {
+            if (FindSentRequest<TPingOp>(SessionSelfPingReqId)) {
                 // We have an active request which has not been answered yet
                 // Cancel everything, it's a timeout :(
                 SessionSelfPingContext.reset();

src/client/persqueue_public/impl/write_session.cpp

@@ -117,9 +117,9 @@ std::optional<TContinuationToken> TSimpleBlockingWriteSession::WaitForToken(cons
             if (auto* readyEvent = std::get_if<TWriteSessionEvent::TReadyToAcceptEvent>(&event)) {
                 Y_ABORT_UNLESS(!token.has_value());
                 token = std::move(readyEvent->ContinuationToken);
-            } else if (auto* ackEvent = std::get_if<TWriteSessionEvent::TAcksEvent>(&event)) {
+            } else if (std::get_if<TWriteSessionEvent::TAcksEvent>(&event)) {
                 // discard
-            } else if (auto* closeSessionEvent = std::get_if<TSessionClosedEvent>(&event)) {
+            } else if (std::get_if<TSessionClosedEvent>(&event)) {
                 Closed.store(true);
                 return std::nullopt;
             }

src/client/topic/impl/write_session.cpp

@@ -147,9 +147,9 @@ std::optional<TContinuationToken> TSimpleBlockingWriteSession::WaitForToken(cons
             if (auto* readyEvent = std::get_if<TWriteSessionEvent::TReadyToAcceptEvent>(&event)) {
                 Y_ABORT_UNLESS(!token.has_value());
                 token = std::move(readyEvent->ContinuationToken);
-            } else if (auto* ackEvent = std::get_if<TWriteSessionEvent::TAcksEvent>(&event)) {
+            } else if (std::get_if<TWriteSessionEvent::TAcksEvent>(&event)) {
                 // discard
-            } else if (auto* closeSessionEvent = std::get_if<TSessionClosedEvent>(&event)) {
+            } else if (std::get_if<TSessionClosedEvent>(&event)) {
                 Closed.store(true);
                 return std::nullopt;
             }

src/client/types/credentials/oauth2_token_exchange/credentials.cpp

@@ -98,7 +98,7 @@ ERetryErrorClass SyncRetryPolicyClass(const std::exception* ex, bool retryAllErr
             return ERetryErrorClass::ShortRetry;
         }
     }
-    if (const TSystemError* err = dynamic_cast<const TSystemError*>(ex)) {
+    if (dynamic_cast<const TSystemError*>(ex)) {
         return ERetryErrorClass::ShortRetry;
     }