MacOS: fix clang redef warning

diff --git a/src/OS/os.h-Darwin b/src/OS/os.h-Darwin
index af06bdcbcd6a0bbb7e07ad1c2ab3024827b4f86f..559003f537b24b7b9ef3cc255e79a3b0db827385 100644 (file)
--- a/src/OS/os.h-Darwin
+++ b/src/OS/os.h-Darwin
@@ -36,7 +36,10 @@ updating Exim to use the newer interface. */
 #define DYNLIB_FN_EXT "dylib"
 
 /* We currently need some assistance getting OFF_T_FMT correct on MacOS */
-#define OFF_T_FMT "%llu"
+#ifdef OFF_T_FMT
+# undef OFF_T_FMT
+#endif
+#define OFF_T_FMT "%lld"
 #define LONGLONG_T long int
 
 /* End */