Replace `__hsunix_getpwent` wrapper with CApiFFI

System/Posix/User.hsc

@@ -378,11 +378,11 @@ getAllUserEntries =
                      else do thisentry <- unpackUserEntry ppw
                              worker (thisentry : accum)
 
-foreign import ccall unsafe "__hsunix_getpwent"
+foreign import capi unsafe "HsUnix.h getpwent"
   c_getpwent :: IO (Ptr CPasswd)
-foreign import ccall unsafe "setpwent"
+foreign import capi unsafe "HsUnix.h setpwent"
   c_setpwent :: IO ()
-foreign import ccall unsafe "endpwent"
+foreign import capi unsafe "HsUnix.h endpwent"
   c_endpwent :: IO ()
 #else
 getAllUserEntries = error "System.Posix.User.getAllUserEntries: not supported"

cbits/HsUnix.c

@@ -16,14 +16,6 @@ void *__hsunix_rtldNext (void) {return RTLD_NEXT;}
 void *__hsunix_rtldDefault (void) {return RTLD_DEFAULT;}
 #endif
 
-#ifdef HAVE_GETPWENT
-// getpwent is a macro on some platforms, so we need a wrapper:
-struct passwd *__hsunix_getpwent(void)
-{
-    return getpwent();
-}
-#endif
-
 #if HAVE_GETPWNAM_R
 // getpwnam_r is a macro on some platforms, so we need a wrapper:
 int __hsunix_getpwnam_r(const char *name, struct passwd *pw, char *buffer,

include/HsUnix.h

@@ -113,11 +113,6 @@ fall back to O_FSYNC, which should be the same */
 # define WCOREDUMP(s) 0
 #endif
 
-#ifdef HAVE_GETPWENT
-// getpwent is a macro on some platforms, so we need a wrapper:
-struct passwd *__hsunix_getpwent(void);
-#endif
-
 #if HAVE_GETPWNAM_R
 // getpwnam_r is a macro on some platforms, so we need a wrapper:
 int __hsunix_getpwnam_r(const char *, struct passwd *, char *, size_t,