util/log: Mark qemu_log_trylock as G_GNUC_WARN_UNUSED_RESULT

Now that all uses have been updated, consider a missing
test of the result of qemu_log_trylock a bug and Werror.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220417183019.755276-19-richard.henderson@linaro.org>

diff --git a/include/qemu/log.h b/include/qemu/log.h
index 2d9455d..3a1f3a6 100644 (file)
--- a/include/qemu/log.h
+++ b/include/qemu/log.h
@@ -67,7 +67,7 @@ static inline bool qemu_log_separate(void)
 
 /* Lock/unlock output. */
 
-FILE *qemu_log_trylock(void);
+FILE *qemu_log_trylock(void) G_GNUC_WARN_UNUSED_RESULT;
 void qemu_log_unlock(FILE *fd);
 
 /* Logging functions: */