valgrind.

C/init.c

@@ -1472,5 +1472,7 @@ void Yap_exit(int value) {
   }
   Yap_CloseStreams(false);
   Yap_CloseReadline();
+#if USE_SYSTEM_MALLOC
+#endif
   exit(value);
 }

C/text.c

@@ -1416,6 +1416,9 @@ void *Yap_Concat_Text(int n, seq_tv_t inp[], seq_tv_t *out USES_REGS) {
   lengv = (size_t *)malloc(n * sizeof(size_t));
   HEAP_ERROR(lengv, size_t);
   buf = concat(n, out, bufv, encv, lengv PASS_REGS);
+  free(bufv);
+  free(lengv);
+  free(encv);
   return buf;
 }