patch 8.0.0192: cannot build with tiny features

Problem:    Build fails with tiny features.
Solution:   Change #ifdef for hash_clear().  Avoid warning for unused
            argument.
diff --git a/src/hashtab.c b/src/hashtab.c
index 658bfb9..4bf41e0 100644
--- a/src/hashtab.c
+++ b/src/hashtab.c
@@ -70,7 +70,6 @@
     ht->ht_mask = HT_INIT_SIZE - 1;
 }
 
-#if defined(FEAT_EVAL) || defined(FEAT_SYN_HL) || defined(PROTO)
 /*
  * Free the array of a hash table.  Does not free the items it contains!
  * If "ht" is not freed then you should call hash_init() next!
@@ -104,7 +103,6 @@
     }
     hash_clear(ht);
 }
-#endif
 
 /*
  * Find "key" in hashtable "ht".  "key" must not be NULL.
diff --git a/src/if_cscope.c b/src/if_cscope.c
index 31c0371..60480a5 100644
--- a/src/if_cscope.c
+++ b/src/if_cscope.c
@@ -207,7 +207,7 @@
     static void
 do_cscope_general(
     exarg_T	*eap,
-    int		make_split) /* whether to split window */
+    int		make_split UNUSED) /* whether to split window */
 {
     cscmd_T *cmdp;
 
diff --git a/src/version.c b/src/version.c
index bf4b82d..a825013 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    192,
+/**/
     191,
 /**/
     190,