Code cleanup

Author: sergeyklay

src/psync/pdeviceid.c

@@ -19,8 +19,6 @@
 #include <winuser.h>
 #include <windows.h>
 #elif defined(P_OS_MACOSX)
-#include <errno.h>
-#include <limits.h>
 #include <stdlib.h>
 #include <sys/utsname.h>
 #include <sys/sysctl.h>
@@ -90,20 +88,7 @@ static char *psync_detect_os_name() {
   if (uname(&un))
     ver = "macOS";
   else {
-    v = strtol(un.release, &endptr, 0);
-    /*  out of range,      extra junk at end,  no conversion at all */
-    if (errno == ERANGE || *endptr != '\0' || un.release == endptr) {
-      log_error("failed determine OS release: %s", strerror(errno));
-      v = 0;
-    }
-#if LONG_MIN < INT_MIN || LONG_MAX > INT_MAX
-    else if (v < INT_MIN || v > INT_MAX) {
-      errno = ERANGE;
-      log_error("failed determine OS release: %s", strerror(errno));
-      v = 0;
-    }
-#endif
-
+    v = atoi(un.release);
     switch (v) {
       case 21: ver="macOS 12 Monterey"; break;
       case 20: ver="macOS 11 Big Sur"; break;