util: Don't reference errno when pthread fails.

Pthread library does not set errno.
Pthread library's errno is returned by return value.

Co-authored-by: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>

Github-Pull: #19194
Rebased-From: cb38b069b0f41b1a26264784b1c1303c8ac6ab08

1 files changed, 3 insertions, 2 deletions

diff --git a/src/util/system.cpp b/src/util/system.cpp
index b0a538b527..b6a7f3926d 100644
--- a/src/util/system.cpp
+++ b/src/util/system.cpp
@@ -1155,8 +1155,9 @@ void ScheduleBatchPriority()
 {
 #ifdef SCHED_BATCH
     const static sched_param param{};
-    if (pthread_setschedparam(pthread_self(), SCHED_BATCH, &param) != 0) {
-        LogPrintf("Failed to pthread_setschedparam: %s\n", strerror(errno));
+    const int rc = pthread_setschedparam(pthread_self(), SCHED_BATCH, &param);
+    if (rc != 0) {
+        LogPrintf("Failed to pthread_setschedparam: %s\n", strerror(rc));
     }
 #endif
 }