gcc: rename CONFIG_PRAGMA_DISABLE_UNUSED_BUT_SET to CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/coroutine-ucontext.c b/coroutine-ucontext.c
index 2ed703a..a9c30e9 100644
--- a/coroutine-ucontext.c
+++ b/coroutine-ucontext.c
@@ -200,7 +200,7 @@
 }
 
 #ifdef CONFIG_VALGRIND_H
-#ifdef CONFIG_PRAGMA_DISABLE_UNUSED_BUT_SET
+#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE
 /* Work around an unused variable in the valgrind.h macro... */
 #pragma GCC diagnostic ignored "-Wunused-but-set-variable"
 #endif
@@ -208,7 +208,7 @@
 {
     VALGRIND_STACK_DEREGISTER(co->valgrind_stack_id);
 }
-#ifdef CONFIG_PRAGMA_DISABLE_UNUSED_BUT_SET
+#ifdef CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE
 #pragma GCC diagnostic error "-Wunused-but-set-variable"
 #endif
 #endif