vcs-svn: Avoid %z in format string

In the spirit of v1.6.4-rc0~124 (MinGW: Fix compiler warning in
merge-recursive, 2009-05-23), use a 32-bit integer instead; the
dump file parser does not support any better, anyway.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

vcs-svn/fast_export.c

@@ -48,8 +48,9 @@ void fast_export_commit(uint32_t revision, uint32_t author, char *log,
 		   ~author ? pool_fetch(author) : "nobody",
 		   ~author ? pool_fetch(author) : "nobody",
 		   ~uuid ? pool_fetch(uuid) : "local", timestamp);
-	printf("data %zd\n%s%s\n",
-		   strlen(log) + strlen(gitsvnline), log, gitsvnline);
+	printf("data %"PRIu32"\n%s%s\n",
+		   (uint32_t) (strlen(log) + strlen(gitsvnline)),
+		   log, gitsvnline);
 	if (!first_commit_done) {
 		if (revision > 1)
 			printf("from refs/heads/master^0\n");