oops, avoid using a reserved identifier

jmvalin · jmvalin · commit 82ac57d9f1aa · 2023-04-19T00:31:59.000-04:00
diff --git a/silk/debug.c b/silk/debug.c
@@ -29,7 +29,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "config.h"
 #endif
 
-typedef int _prevent_empty_translation_unit_warning;
+typedef int prevent_empty_translation_unit_warning;
 
 #include "debug.h"
 
