signal: uclibc use c_uint type

Signed-off-by: Xiaobo Liu <[email protected]>

Author: cppcoffee

Diff for: src/sys/signal.rs

@@ -414,7 +414,7 @@ cfg_if! {
     if #[cfg(target_os = "redox")] {
         type SaFlags_t = libc::c_ulong;
     } else if #[cfg(target_env = "uclibc")] {
-        type SaFlags_t = libc::c_ulong;
+        type SaFlags_t = libc::c_uint;
     } else {
         type SaFlags_t = libc::c_int;
     }