Backport platform specific code to python2 (#6772)

stdlib/@python2/syslog.pyi

@@ -1,43 +1,44 @@
+import sys
 from typing import overload
 
-LOG_ALERT: int
-LOG_AUTH: int
-LOG_CONS: int
-LOG_CRIT: int
-LOG_CRON: int
-LOG_DAEMON: int
-LOG_DEBUG: int
-LOG_EMERG: int
-LOG_ERR: int
-LOG_INFO: int
-LOG_KERN: int
-LOG_LOCAL0: int
-LOG_LOCAL1: int
-LOG_LOCAL2: int
-LOG_LOCAL3: int
-LOG_LOCAL4: int
-LOG_LOCAL5: int
-LOG_LOCAL6: int
-LOG_LOCAL7: int
-LOG_LPR: int
-LOG_MAIL: int
-LOG_NDELAY: int
-LOG_NEWS: int
-LOG_NOTICE: int
-LOG_NOWAIT: int
-LOG_PERROR: int
-LOG_PID: int
-LOG_SYSLOG: int
-LOG_USER: int
-LOG_UUCP: int
-LOG_WARNING: int
-
-def LOG_MASK(a: int) -> int: ...
-def LOG_UPTO(a: int) -> int: ...
-def closelog() -> None: ...
-def openlog(ident: str = ..., logoption: int = ..., facility: int = ...) -> None: ...
-def setlogmask(x: int) -> int: ...
-@overload
-def syslog(priority: int, message: str) -> None: ...
-@overload
-def syslog(message: str) -> None: ...
+if sys.platform != "win32":
+    LOG_ALERT: int
+    LOG_AUTH: int
+    LOG_CONS: int
+    LOG_CRIT: int
+    LOG_CRON: int
+    LOG_DAEMON: int
+    LOG_DEBUG: int
+    LOG_EMERG: int
+    LOG_ERR: int
+    LOG_INFO: int
+    LOG_KERN: int
+    LOG_LOCAL0: int
+    LOG_LOCAL1: int
+    LOG_LOCAL2: int
+    LOG_LOCAL3: int
+    LOG_LOCAL4: int
+    LOG_LOCAL5: int
+    LOG_LOCAL6: int
+    LOG_LOCAL7: int
+    LOG_LPR: int
+    LOG_MAIL: int
+    LOG_NDELAY: int
+    LOG_NEWS: int
+    LOG_NOTICE: int
+    LOG_NOWAIT: int
+    LOG_PERROR: int
+    LOG_PID: int
+    LOG_SYSLOG: int
+    LOG_USER: int
+    LOG_UUCP: int
+    LOG_WARNING: int
+    def LOG_MASK(a: int) -> int: ...
+    def LOG_UPTO(a: int) -> int: ...
+    def closelog() -> None: ...
+    def openlog(ident: str = ..., logoption: int = ..., facility: int = ...) -> None: ...
+    def setlogmask(x: int) -> int: ...
+    @overload
+    def syslog(priority: int, message: str) -> None: ...
+    @overload
+    def syslog(message: str) -> None: ...