Fix accidentally casting away const

Recently introduced in commit b15c1513984.

diff --git a/src/bin/pg_waldump/archive_waldump.c b/src/bin/pg_waldump/archive_waldump.c
index dedf641901c6a534f213aa32d7a0b22a232ede67..ff1cc3fa5f0dfb9ed8b86318303fdc5d7009d929 100644 (file)
--- a/src/bin/pg_waldump/archive_waldump.c
+++ b/src/bin/pg_waldump/archive_waldump.c
@@ -852,7 +852,7 @@ member_is_wal_file(astreamer_waldump *mystreamer, astreamer_member *member,
 static uint32
 hash_string_pointer(const char *s)
 {
-       unsigned char *ss = (unsigned char *) s;
+       const unsigned char *ss = (const unsigned char *) s;
 
        return hash_bytes(ss, strlen(s));
 }