[PBCKP-248] a bit more accurate ifdef

just small refactoring.

Author: funny-falcon

src/archive.c

@@ -553,17 +553,17 @@ push_file_internal(const char *wal_file_name, const char *pg_xlog_dir,
 
     /* enable streaming compression */
     if (is_compress)
-#ifdef HAVE_LIBZ
     {
+#ifdef HAVE_LIBZ
         pioFilter_i flt = pioGZCompressFilter(compress_level);
         err = pioCopy($reduce(pioWriteFlush, out),
                       $reduce(pioRead, in),
                       flt);
-    }
-    else
 #else
-    elog(ERROR, "Compression is requested, but not compiled it");
+        elog(ERROR, "Compression is requested, but not compiled it");
 #endif
+    }
+    else
     {
         err = pioCopy($reduce(pioWriteFlush, out),
                       $reduce(pioRead, in));