isl_hash_table_remove: update number of entries

Otherwise, removing an element and later adding it back again
would increase the number of elements in the table, quickly
leading to overflows.

diff --git a/isl_hash.c b/isl_hash.c
index 41076b8..3a39bbc 100644 (file)
--- a/isl_hash.c
+++ b/isl_hash.c
@@ -91,4 +91,5 @@ void isl_hash_table_remove(struct isl_ctx *ctx,
 
        entry->hash = 0;
        entry->data = NULL;
+       table->n--;
 }