QSharedMemorySystemV: fix shm vs sem typo

Fixes: QTBUG-132053
Change-Id: Ia4f2bdc8edff91020f13fffd79261a9feaf2f496
Reviewed-by: Fabian Kosmale <[email protected]>
(cherry picked from commit 902058e)
Reviewed-by: Qt Cherry-pick Bot <[email protected]>
(cherry picked from commit e950929)

src/corelib/ipc/qsharedmemory_p.h

@@ -105,7 +105,7 @@ class QSharedMemorySystemV
     { return quint16(type) <= 0xff; }
     static bool runtimeSupportCheck();
 
-#if QT_CONFIG(sysv_sem)
+#if QT_CONFIG(sysv_shm)
     key_t handle(QSharedMemoryPrivate *self);
     bool cleanHandle(QSharedMemoryPrivate *self);
     bool create(QSharedMemoryPrivate *self, qsizetype size);