include cleanups: remove unused headers and add feature test macros

[musl] / src / signal / sighold.c

diff --git a/src/signal/sighold.c b/src/signal/sighold.c
index 5b0f6b1..992812f 100644 (file)
--- a/src/signal/sighold.c
+++ b/src/signal/sighold.c
@@ -1,5 +1,5 @@
 #include <signal.h>
-#include <stdlib.h>
+#include <stddef.h>
 
 int sighold(int sig)
 {