Fix walmethods.c build without libz

Per numerous buildfarm manuals

diff --git a/src/bin/pg_basebackup/walmethods.c b/src/bin/pg_basebackup/walmethods.c
index e0ec752bbdebbb045192b27a55dc4cbb704475df..d28913fa69f4a5b58f6ceb82bdcfcd5d79a042c2 100644 (file)
--- a/src/bin/pg_basebackup/walmethods.c
+++ b/src/bin/pg_basebackup/walmethods.c
@@ -416,6 +416,9 @@ tar_write(Walfile f, const void *buf, size_t count)
        return count;
    }
 #endif
+   else
+       /* Can't happen - compression enabled with no libz */
+       return -1;
 }
 
 static bool
@@ -879,8 +882,10 @@ CreateWalTarMethod(const char *tarbase, int compression, bool sync)
    tar_data->fd = -1;
    tar_data->compression = compression;
    tar_data->sync = sync;
+#ifdef HAVE_LIBZ
    if (compression)
        tar_data->zlibOut = (char *) pg_malloc(ZLIB_OUT_SIZE + 1);
+#endif
 
    return method;
 }