patch 9.0.1096: reallocating hashtab when the size didn't change

Problem:    Reallocating hashtab when the size didn't change.
Solution:   Bail out when the hashtab is already the desired size.

src/hashtab.c

@@ -405,6 +405,10 @@ hash_may_resize(
 	    return FAIL;	// overflow
     }
 
+    // bail out if the hashtab is already at the desired size
+    if (newsize == ht->ht_mask + 1)
+	return OK;
+
     if (newsize == HT_INIT_SIZE)
     {
 	// Use the small array inside the hashdict structure.

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1096,
 /**/
     1095,
 /**/