Comment out assert in kvstore for overhead lut (#1745)

Until we found out why the assert is flaky, let's comment it out. We can
live with this overhead lut being slightly wrong, but we don't want the
assert to abort the program.

Fixes #1657.

Signed-off-by: Viktor Söderqvist <[email protected]>

Author: zuiderkwast

src/kvstore.c

@@ -319,7 +319,8 @@ void kvstoreRelease(kvstore *kvs) {
         if (metadata->rehashing_node) metadata->rehashing_node = NULL;
         hashtableRelease(ht);
     }
-    assert(kvs->overhead_hashtable_lut == 0);
+    /* TODO: The assert below causes a flaky unit test. Find out why. */
+    /* assert(kvs->overhead_hashtable_lut == 0); */
     zfree(kvs->hashtables);
 
     listRelease(kvs->rehashing);